Telaire T8700 Wall Mount Humidity and Temperature Transmitters

Product Overview

The Telaire T8700 is a precision humidity and temperature transmitter designed for HVAC control applications. It features a rugged capacitive sensor for full-scale 0-100% RH measurement with excellent response times, linearity, and stability, offering recovery to condensation and chemicals. The transmitter boasts field-selectable analog outputs (0-5V, 0-10V, 4-20mA) and a passive 10K Type II thermistor. Its modern, rugged, flame-retardant ABS plastic enclosure provides enhanced airflow and minimizes self-heating for accuracy. Installation is simplified with a two-piece enclosure and terminal blocks, allowing for pre-wiring. The T8700 series also features a field-replaceable RH sensor tip module, reducing downtime and costly recalibrations. Available in display and non-display versions, with customized branding options upon request.

Product Attributes

• Brand: Telaire (Amphenol Advanced Sensors)
• Material: Flame retardant, UL-94V ABS plastic
• Sensor Filter: Gas permeable, water resistant
• Certifications: CE and RoHS compliant
• Warranty: Two years (transmitter), one year (replaceable sensor)
• Customization: Customized branding available on request (subject to quantity)

Technical Specifications

Model	Size	Display	Humidity Output (4-20 mA)	Humidity Output (0-5 V)	Humidity Output (0-10 V)	Temperature Output (4-20 mA)	Temperature Output (0-5 V)	Temperature Output (0-10 V)	Temperature Output (Thermistor 10k II)
T8700-E	Euro	No
T8700-E-D	Euro	Yes
T8700 US	US	No
T8700-D US	US	Yes

Specification	Details
Sensing Method	Fully integrated humidity and temperature
Power Supply Requirements	18-30 VAC RMS, 50/60 Hz, or 18 to 42 VDC, polarity protected
Power Consumption	Typical 0.7 W at nominal voltage of 24V AC RMS
Temperature Dependence	0.2% FS per C (0.11% per F)
Operating Conditions	32F to 122F (0C to 50C); 0 to 95% RH, non-condensing
Storage Conditions	-40F to 158F (-40C to 70C)
Flammability Classification	UL94 5VA
Thermistor Type	NTC 10 K W thermistor (passive)
Thermistor Accuracy	1C (15 to 35C)
RH Sensing Element	Capacitive polymer sensor
RH Range	0% to 99% RH (non-condensing)
RH Accuracy (25C)	2.5% RH (20 to 80% RH); 3.5% RH (80% RH)
Active Temperature Range	0 to 50C
Active Temperature Accuracy	0.8C @ 22C
Output Impedance (Voltage)	100
Output Impedance (Current)	RL maximum 500
Digital to Analog Error	1%
Replaceable Sensor Part Number	T63346