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KTO* Series

KELE OSA Thermistor and RTD Sensors

The Kele KTO* OSA Thermistor and RTD Sensors are designed to be cost-effective with accuracies of ±0.5°F (±0.28°C). Each uses metal enclosures and is constructed for easy installation with any building automation system (BAS). The thermistor is made of a very stable, pre-aged material that offers long-life reliability for HVAC control. The platinum RTD comes in 100Ω and 1000Ω versions. All sensors come with a three-year warranty.

Products

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Qty	Model	Description	In Stock	List Price	Internet Price
	KTO11K	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL		51.00	28.56
	KTO11K-X25	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	56.00	31.36
	KTO11K-XC25	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	70.00	39.20
	KTO11K-XCP25	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	61.20	34.27
	KTO11K-XD	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	56.10	31.42
	KTO11K-XG	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	51.00	28.56
	KTO11K-XLT	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PLASTIC SENSOR COVER, METALLIC, ENCL	INFO	70.00	39.20
	KTO11K-XMT	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	45.90	25.70
	KTO11K-XN	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	49.98	27.99
	KTO11K-XN1	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	70.38	39.41
	KTO11K-XN2	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	75.48	42.27
	KTO11K-XN3	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	80.58	45.12
	KTO11K-XP	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO11K-XTB	TEMP SENSOR, OSA, 10K TYPE III [11K SHUNT], 6.00" PROBE, METALLIC, ENCL	INFO	47.94	26.85
	KTO21	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	49.00	27.44
	KTO21-X25	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	47.94	26.85
	KTO21-XC25	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	60.18	33.70
	KTO21-XCP25	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	58.14	32.56
	KTO21-XD	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	52.02	29.13
	KTO21-XG	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	54.00	30.24
	KTO21-XLT	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	53.04	29.70
	KTO21-XMT	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	43.86	24.56
	KTO21-XN	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO21-XN1	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	67.32	37.70
	KTO21-XN2	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	72.42	40.56
	KTO21-XN3	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	77.52	43.41
	KTO21-XP	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO21-XTB	TEMP SENSOR, OSA, 2.252K, 6.00" PROBE, METALLIC, ENCL	INFO	44.88	25.13
	KTO22	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	49.00	27.44
	KTO22-X25	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	47.94	26.85
	KTO22-XC25	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	60.18	33.70
	KTO22-XCP25	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	58.14	32.56
	KTO22-XD	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	52.02	29.13
	KTO22-XG	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO22-XLT	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	59.00	33.04
	KTO22-XMT	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	43.86	24.56
	KTO22-XN	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO22-XN1	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	67.32	37.70
	KTO22-XN2	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	72.42	40.56
	KTO22-XN3	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	77.52	43.41
	KTO22-XP	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO22-XTB	TEMP SENSOR, OSA, 3K, 6.00" PROBE, METALLIC, ENCL	INFO	44.88	25.13
	KTO24	TEMP SENSOR, OSA, 10K TYPE II, 3" PROBE, METALL		49.00	27.44
	KTO24-X25	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	53.00	29.68
	KTO24-XC25	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	67.00	37.52
	KTO24-XCP25	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	64.00	35.84
	KTO24-XD	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	58.00	32.48
	KTO24-XG	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO24-XLT	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	59.00	33.04
	KTO24-XMT	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	49.00	27.44
	KTO24-XN	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	52.00	29.12
	KTO24-XN1	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	75.00	42.00
	KTO24-XN2	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	80.00	44.80
	KTO24-XN3	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	86.00	48.16
	KTO24-XP	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO24-XTB	TEMP SENSOR, OSA, 10K TYPE II, 6.00" PROBE, METALLIC, ENCL	INFO	50.00	28.00
	KTO27	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	49.00	27.44
	KTO27-X25	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	47.94	26.85
	KTO27-XC25	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	60.18	33.70
	KTO27-XCP25	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	58.14	32.56
	KTO27-XD	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	52.02	29.13
	KTO27-XG	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO27-XLT	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	53.04	29.70
	KTO27-XMT	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	43.86	24.56
	KTO27-XN	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO27-XN1	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	67.32	37.70
	KTO27-XN2	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	72.42	40.56
	KTO27-XN3	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	77.52	43.41
	KTO27-XP	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO27-XTB	TEMP SENSOR, OSA, 100K, 6.00" PROBE, METALLIC, ENCL	INFO	44.88	25.13
	KTO3	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL		49.00	27.44
	KTO3-X25	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	53.00	29.68
	KTO3-XC25	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	67.00	37.52
	KTO3-XCP25	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	58.14	32.56
	KTO3-XD	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	58.00	32.48
	KTO3-XG	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO3-XLT	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	59.00	33.04
	KTO3-XMT	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	49.00	27.44
	KTO3-XN	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO3-XN1	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	75.00	42.00
	KTO3-XN2	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	72.42	40.56
	KTO3-XN3	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	86.00	48.16
	KTO3-XP	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	52.00	29.12
	KTO3-XTB	TEMP SENSOR, OSA, 10K TYPE III, 6.00" PROBE, METALLIC, ENCL	INFO	44.88	25.13
	KTO42	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL		49.00	27.44
	KTO42-X25	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	53.00	29.68
	KTO42-XC25	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	60.18	33.70
	KTO42-XCP25	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	58.14	32.56
	KTO42-XD	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	58.00	32.48
	KTO42-XG	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO42-XLT	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	59.00	33.04
	KTO42-XMT	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	49.00	27.44
	KTO42-XN	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO42-XN1	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	67.32	37.70
	KTO42-XN2	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	72.42	40.56
	KTO42-XN3	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	86.00	48.16
	KTO42-XP	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	46.92	26.28
	KTO42-XTB	TEMP SENSOR, OSA, 20K, 6.00" PROBE, METALLIC, ENCL	INFO	44.88	25.13
	KTO81	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL		54.00	30.24
	KTO81-X25	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	53.04	29.70
	KTO81-XC25	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	66.30	37.13
	KTO81-XCP25	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	63.24	35.41
	KTO81-XD	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	66.00	36.96
	KTO81-XG	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	54.06	30.27
	KTO81-XLT	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	59.16	33.13
	KTO81-XMT	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO81-XN	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	53.04	29.70
	KTO81-XN1	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	71.40	39.98
	KTO81-XN2	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	76.50	42.84
	KTO81-XN3	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	80.58	45.12
	KTO81-XP	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	52.02	29.13
	KTO81-XTB	TEMP SENSOR, OSA, 100 RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO85	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL		54.00	30.24
	KTO85-X25	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	53.04	29.70
	KTO85-XC25	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	66.30	37.13
	KTO85-XCP25	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	70.00	39.20
	KTO85-XD	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	66.00	36.96
	KTO85-XG	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	54.06	30.27
	KTO85-XLT	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	66.00	36.96
	KTO85-XMT	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	54.00	30.24
	KTO85-XN	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	53.04	29.70
	KTO85-XN1	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	72.42	40.56
	KTO85-XN2	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	76.50	42.84
	KTO85-XN3	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	81.60	45.70
	KTO85-XP	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	52.02	29.13
	KTO85-XTB	TEMP SENSOR, OSA, 1K RTD 385, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO91	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	54.00	30.24
	KTO91-X25	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	53.04	29.70
	KTO91-XC25	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	66.30	37.13
	KTO91-XCP25	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	63.24	35.41
	KTO91-XD	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	59.16	33.13
	KTO91-XG	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	54.06	30.27
	KTO91-XLT	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	59.16	33.13
	KTO91-XMT	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42
	KTO91-XN	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	53.04	29.70
	KTO91-XN1	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	72.42	40.56
	KTO91-XN2	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	76.50	42.84
	KTO91-XN3	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	80.58	45.12
	KTO91-XP	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	52.02	29.13
	KTO91-XTB	TEMP SENSOR, OSA, 1K RTD 375, 6.00" PROBE, METALLIC, ENCL	INFO	48.96	27.42

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Accessories

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Features

Metal enclosures with plastic weather shield

Three-year warranty

±0.5°F (±0.28°C) accuracy

Specifications

Accuracy:

Thermistor:±0.50℉ (0.28℃)

RTD:±0.60℉ (0.33℃)

Sensor Type:

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

RTD:

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/°C (power needed to raise the temperature 1°C)

Enclosure Rating:NEMA 1, Metal, weather resistant

Mounting:3/4" conduit fittings

Wiring Terminations:8', 24 AWG gray wire leads, type 71 & 81 sensors have 18" leads

Weight:0.75 lb (0.3 Kg) with no options

Approvals:CE

Warranty:3 years

Certifications

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Catalog Page

KTO* Series

KTO* Series

KELE OSA Thermistor and RTD Sensors

Accessories

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