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ST-A* Series

Precon All-Purpose Thermistor and RTD Sensors

The Precon ST-A Series All Purpose Thermistor and RTD Sensors provide precision remote temperature sensing for building automation systems and mechanical equipment room instrumentation. The active sensing element is made of a highly stable precision thermistor material or platinum RTDs. Each ST-A sensor is a rugged, point-sensitive waterproof sensor featuring a 9" (22.8 cm) 304 stainless steel probe and brass fitting. The brass fitting has a 1/2" NPT male thread. The sensors are supplied with two 1/2" locknuts for easy installation in handy boxes (or other enclosures with 1/2" knockouts).

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Qty	Model	Description	In Stock	List Price	Internet Price
	ST-A11K	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	53.93	26.97
	ST-A11K-X25	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	58.66	29.33
	ST-A11K-XC25	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	80.36	40.18
	ST-A11K-XCO	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	125.09	62.54
	ST-A11K-XCP25	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	75.95	37.98
	ST-A11K-XD	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	65.61	32.80
	ST-A11K-XH	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	73.70	36.85
	ST-A11K-XH-XL12	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 12.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	81.77	40.89
	ST-A11K-XH-XL24	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 24.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	84.82	42.41
	ST-A11K-XN	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	57.07	28.54
	ST-A11K-XN1	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	77.33	38.67
	ST-A11K-XN2	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	82.53	41.26
	ST-A11K-XN3	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	88.09	44.04
	ST-A11K-XP	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	56.50	28.25
	ST-A11K-XW	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	97.58	48.79
	ST-A11K-XW-XL4	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 4.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	79.58	39.79
	ST-A11K-XW-XL6	TEMP SENSOR, DUCT, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	79.59	39.80
	ST-A21	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	47.95	23.97
	ST-A21-X25	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	52.89	26.44
	ST-A21-XC25	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	74.60	37.30
	ST-A21-XCO	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	119.33	59.66
	ST-A21-XCP25	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	70.19	35.10
	ST-A21-XD	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	59.83	29.92
	ST-A21-XH	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	67.93	33.97
	ST-A21-XHP	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	64.42	32.21
	ST-A21-XL2	TEMP SENSOR, DUCT, 2.252K, 2.00" PROBE, NO ENCL, NO OUTPUT	INFO	46.00	23.00
	ST-A21-XN	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	51.31	25.66
	ST-A21-XN1	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	71.56	35.78
	ST-A21-XN2	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	76.76	38.38
	ST-A21-XN3	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	82.32	41.16
	ST-A21-XP	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	50.73	25.36
	ST-A21-XW	TEMP SENSOR, DUCT, 2.252K, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	91.82	45.91
	ST-A22	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	47.95	23.97
	ST-A22-X25	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	52.89	26.44
	ST-A22-XC25	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	74.60	37.30
	ST-A22-XCO	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	119.33	59.66
	ST-A22-XCP25	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	70.19	35.10
	ST-A22-XD	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	59.83	29.92
	ST-A22-XH	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	67.99	34.00
	ST-A22-XHP	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	64.42	32.21
	ST-A22-XN	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	51.31	25.66
	ST-A22-XN1	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	71.56	35.78
	ST-A22-XN2	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	76.76	38.38
	ST-A22-XN3	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	82.32	41.16
	ST-A22-XP	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	50.73	25.36
	ST-A22-XW	TEMP SENSOR, DUCT, 3K, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	91.82	45.91
	ST-A24	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT		47.95	23.97
	ST-A24-X25	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	52.89	26.44
	ST-A24-XC25	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	74.60	37.30
	ST-A24-XCO	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	119.33	59.66
	ST-A24-XCP25	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	70.19	35.10
	ST-A24-XD	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	59.83	29.92
	ST-A24-XH	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	67.99	34.00
	ST-A24-XH-XL18	TEMP SENSOR, DUCT, 10K TYPE II, 18.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	70.78	35.39
	ST-A24-XHP	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	64.42	32.21
	ST-A24-XL12	TEMP SENSOR, DUCT, 10K TYPE II, 12.00" PROBE, NO E	INFO	50.07	25.04
	ST-A24-XL18	TEMP SENSOR, DUCT, 10K TYPE II, 18.00" PROBE, NO ENCL, NO OUTPUT	INFO	48.58	24.29
	ST-A24-XL2	TEMP SENSOR, DUCT, 10K TYPE II, 2.00" PROBE, NO ENCL, NO OUTPUT	INFO	46.00	23.00
	ST-A24-XL20	TEMP SENSOR, DUCT, 10K TYPE II, 20.00" PROBE, NO ENCL, NO OUTPUT	INFO	50.91	25.45
	ST-A24-XL4	TEMP SENSOR, DUCT, 10K TYPE II, 4.00" PROBE, NO ENCL, NO OUTPUT	INFO	50.93	25.47
	ST-A24-XL6	TEMP SENSOR, DUCT, 10K TYPE II, 6.00" PROBE, NO ENCL, NO OUTPUT	INFO	45.71	22.85
	ST-A24-XN	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	51.31	25.66
	ST-A24-XN1	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	71.56	35.78
	ST-A24-XN2	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	76.76	38.38
	ST-A24-XN3	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	82.32	41.16
	ST-A24-XP	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	50.73	25.36
	ST-A24-XW	TEMP SENSOR, DUCT, 10K TYPE II, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	91.88	45.94
	ST-A27	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	47.95	23.97
	ST-A27-X25	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	52.89	26.44
	ST-A27-XC25	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	74.60	37.30
	ST-A27-XCO	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	119.33	59.66
	ST-A27-XCP25	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	70.19	35.10
	ST-A27-XD	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	59.83	29.92
	ST-A27-XH	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	67.99	34.00
	ST-A27-XHP	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	64.42	32.21
	ST-A27-XL2	TEMP SENSOR, DUCT, 100K, 2.00" PROBE, NO ENCL, NO OUTPUT	INFO	46.00	23.00
	ST-A27-XN	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	51.31	25.66
	ST-A27-XN1	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	71.56	35.78
	ST-A27-XN2	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	76.76	38.38
	ST-A27-XN3	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	82.32	41.16
	ST-A27-XP	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	50.73	25.36
	ST-A27-XW	TEMP SENSOR, DUCT, 100K, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	91.88	45.94
	ST-A3	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT		47.95	23.97
	ST-A3-X25	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	52.89	26.44
	ST-A3-XC25	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	74.60	37.30
	ST-A3-XCO	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT		119.33	59.66
	ST-A3-XCP25	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	70.19	35.10
	ST-A3-XD	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	59.83	29.92
	ST-A3-XH	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, METALLIC ENCL, NO OUTPUT		67.87	33.94
	ST-A3-XH-XL12	TEMP SENSOR, DUCT, 10K TYPE III, 12.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	76.01	38.00
	ST-A3-XH-XL24	TEMP SENSOR, DUCT, 10K TYPE III, 24.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	79.04	39.52
	ST-A3-XL2	TEMP SENSOR, DUCT, 10K TYPE III, 2.00" PROBE, NO ENCL, NO OUTPUT		46.29	23.14
	ST-A3-XL36-XW	TEMP SENSOR, DUCT, 10K TYPE III, 36.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	91.39	45.70
	ST-A3-XN	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	51.31	25.66
	ST-A3-XN1	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	71.56	35.78
	ST-A3-XN2	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	76.76	38.38
	ST-A3-XN3	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	82.32	41.16
	ST-A3-XP	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	50.73	25.36
	ST-A3-XW	TEMP SENSOR, DUCT, 10K TYPE III, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	91.88	45.94
	ST-A3-XW-XL4	TEMP SENSOR, DUCT, 10K TYPE III, 4.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	73.86	36.93
	ST-A3-XW-XL6	TEMP SENSOR, DUCT, 10K TYPE III, 6.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	73.83	36.91
	ST-A42	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	47.95	23.97
	ST-A42-X25	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	52.89	26.44
	ST-A42-XC25	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	74.60	37.30
	ST-A42-XCO	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	119.33	59.66
	ST-A42-XCP25	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	70.19	35.10
	ST-A42-XD	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	59.83	29.92
	ST-A42-XH	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	67.99	34.00
	ST-A42-XHP	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	64.42	32.21
	ST-A42-XL2	TEMP SENSOR, DUCT, 20K, 2.00" PROBE, NO ENCL, NO OUTPUT	INFO	46.00	23.00
	ST-A42-XL24-XW	TEMP SENSOR, DUCT, 20K, 24.00" PROBE, METALLIC ENC	INFO	80.79	40.39
	ST-A42-XN	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	51.31	25.66
	ST-A42-XN1	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	71.56	35.78
	ST-A42-XN2	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	76.76	38.38
	ST-A42-XN3	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	82.32	41.16
	ST-A42-XP	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	50.73	25.36
	ST-A42-XW	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	91.82	45.91
	ST-A42-XW-X25	TEMP SENSOR, DUCT, 20K, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	80.96	40.48
	ST-A5	TEMP SENSOR, DUCT, 1K BALCO RTD, 8.25" PROBE, NO ENCL	INFO	220.90	110.45
	ST-A63	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	115.45	57.72
	ST-A63-X25	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	122.20	61.10
	ST-A63-XC25	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	159.52	79.76
	ST-A63-XCO	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	236.38	118.19
	ST-A63-XCP25	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	151.93	75.97
	ST-A63-XD	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	134.20	67.10
	ST-A63-XH	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	148.19	74.09
	ST-A63-XHP	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	142.03	71.02
	ST-A63-XL2	TEMP SENSOR, DUCT, 1K NI RTD, 2.00" PROBE, NO ENCL, NO OUTPUT	INFO	110.50	55.25
	ST-A63-XN	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	119.51	59.76
	ST-A63-XN1	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	154.39	77.20
	ST-A63-XN2	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	163.23	81.61
	ST-A63-XN3	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	172.89	86.44
	ST-A63-XP	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	118.52	59.26
	ST-A63-XW	TEMP SENSOR, DUCT, 1K NI RTD, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	189.22	94.61
	ST-A7-1XD	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	337.02	168.51
	ST-A71	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	328.59	164.29
	ST-A71-X25	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	325.24	162.62
	ST-A71-XC25	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	361.82	180.91
	ST-A71-XCO	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	437.20	218.60
	ST-A71-XCP25	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	354.39	177.20
	ST-A71-XH	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	350.71	175.35
	ST-A71-XHP	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	344.69	172.34
	ST-A71-XL2	TEMP SENSOR, DUCT, 100 RTD 385, 2.00" PROBE, NO ENCL, NO OUTPUT	INFO	313.77	156.89
	ST-A71-XN	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	322.61	161.30
	ST-A71-XN1	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	356.72	178.36
	ST-A71-XN2	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	365.46	182.73
	ST-A71-XN3	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	374.85	187.43
	ST-A71-XP	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	321.63	160.82
	ST-A71-XW	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	390.84	195.42
	ST-A77	ALL PURP SENSOR 1000 OHM RTD	INFO	339.03	169.51
	ST-A81	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT		100.12	50.06
	ST-A81-X25	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	107.76	53.88
	ST-A81-XC25	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	145.07	72.53
	ST-A81-XCO	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	221.95	110.98
	ST-A81-XCP25	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	137.52	68.76
	ST-A81-XD	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	136.49	68.25
	ST-A81-XH	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	133.76	66.88
	ST-A81-XHP	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	127.62	63.81
	ST-A81-XL2	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	95.97	47.98
	ST-A81-XN	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	105.09	52.54
	ST-A81-XN1	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	139.88	69.94
	ST-A81-XN2	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	148.80	74.40
	ST-A81-XN3	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	158.37	79.18
	ST-A81-XP	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	104.09	52.04
	ST-A81-XW	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	174.78	87.39
	ST-A81-XZ	TEMP SENSOR, DUCT, 100 RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT		96.24	48.12
	ST-A85	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT		100.12	50.06
	ST-A85-X25	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	107.76	53.88
	ST-A85-XC25	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	145.07	72.53
	ST-A85-XCO	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	221.95	110.98
	ST-A85-XCP25	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	137.52	68.76
	ST-A85-XD	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	136.49	68.25
	ST-A85-XH	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	133.76	66.88
	ST-A85-XHP	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	127.62	63.81
	ST-A85-XL2	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	95.97	47.98
	ST-A85-XL20-XW	TEMP SENSOR, DUCT, 1K RTD 385, 20.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	192.57	96.29
	ST-A85-XN	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	105.09	52.54
	ST-A85-XN1	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	139.88	69.94
	ST-A85-XN2	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	148.80	74.40
	ST-A85-XN3	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	158.37	79.18
	ST-A85-XP	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	104.09	52.04
	ST-A85-XW	TEMP SENSOR, DUCT, 1K RTD 385, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	174.78	87.39
	ST-A91	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	100.12	50.06
	ST-A91-X25	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	107.76	53.88
	ST-A91-XC25	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	145.07	72.53
	ST-A91-XCO	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	221.95	110.98
	ST-A91-XCP25	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	137.52	68.76
	ST-A915-XD	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	182.55	91.27
	ST-A91-XH	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	136.58	68.29
	ST-A91-XHP	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, POLY ENCL, NO OUTPUT	INFO	133.73	66.86
	ST-A91-XL2	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	95.97	47.98
	ST-A91-XN	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	96.05	48.02
	ST-A91-XN1	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	105.04	52.52
	ST-A91-XN2	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	139.89	69.94
	ST-A91-XN3	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	148.80	74.40
	ST-A91-XP	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, NO ENCL, NO OUTPUT	INFO	158.40	79.20
	ST-A91-XW	TEMP SENSOR, DUCT, 1K RTD 375, 9.00" PROBE, METALLIC ENCL, NO OUTPUT	INFO	174.78	87.39

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Features

Life time warranty

Wide selection of thermistor and RTD curves

Tip sensitive for precise temperature response

Adaptable with many options

All metal construction with 304 stainless steel probe

Easy to mount to duct, wall, or back box

Waterproof probe

Specifications

Accuracy:

Thermistor: ±0.36℉ (0.2℃)

RTD:

Type 63: ±0.72℉ (0.40℃)

Type 71: +/-0.0774°F (0.043°C)

Type 81, 85: ±0.27℉ (0.15℃)

Type 91: ±0.54℉ (0.30℃)

Sensor Type:

Thermistor: 2.252 kΩ, 3 kΩ, 10 kΩ Type II, III & III w/11K shunt, 20 kΩ, 100 kΩ

RTD:

Type 63: 1000Ω Nickel

Type 71, 81: 100Ω Pt 385 Curve

Type 85: 1000Ω Pt 385 Curve

Type 91:1000Ω Pt 375 Curve

Temperature Range:

Thermistor/RTD: -40° to 221℉ (-40° to 105℃)

Temperature Coefficient:

Thermistor: Negative temperature coefficient

RTD: Positive temperature coefficient

Temperature Stability:

Thermistor: 0.24℉ (0.13℃) over five years

RTD: Max 0.04% after 1k hours @ 500 ℃

Heat Dissipation: 2.7 mW/℃ (power needed to raise the temperature by 1℃)

Mounting: Directly to duct, wall, or customersupplied back box, no adapters needed for standard boxes

Wiring Terminations: 8' (2.4m) of 24 AWG pigtails with prestripped ends, type 71 & 81 have 18" leads

Weight: 0.2 lb (0.09 Kg) w/o options

Approvals: CE

Warranty: Lifetime

Certifications

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Catalog Page

ST-A* Series

ST-A* Series

Precon All-Purpose Thermistor and RTD Sensors

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