Cooper-Atkins
900 MHz External Temperature/Humidity Transmitter

900 MHz External Temperature/Humidity Transmitter

Model: 31221

About this item

Operates on a 900 MHz frequency-hopping spread spectrum with an open-field range of up to 2,500 ft and a typical interior range of up to 500 ft. The transmitter is battery operated and monitors against preset conditions that are user-defined within the EnviroTrak application. Transmitters 31221-032 calibrated to NIST standards are available.
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Product Specifications

Resolution:0.01 %
Mounting:Bracket (screws or tape)
Temperature Range:-4° to 140°F (-20° to 60°C)
Relative Humidity Range:0 to 100%
Power Source:Battery (CR123A lithium, 3V
Temperature Accuracy:±0.5°F (±0.3°C) at 77°F (25°C)
Relative Humidity Accuracy:±2% (10 to 90%RH)
Battery Life2.5-3 years