Part No.


Solar powered wireless temperature and relative humidity sensor.

Temperature and relative humidity sensors have been designed to provide a reliable and simple method to set up intelligent automation of interior spaces for energy savings.

The units are accurate to 0.3°C and 3% relative humidity. These sensors are suitable for Variable Volume Temperature (VVT) or Variable Air Volume (VAV) forced air systems.

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  • Detail

Features, Benefits & Functions

  • Solar powered wireless temperature and optional relative humidity sensor
  • Temperature accuracy of 0.5°F/ 0.3°C
  • Relative Humidity accuracy of 3%
  • Integrated Range Confirmation® via tricolored LED indication
  • Integrated solar harvesting light level LED indication
  • Reliable radio reception range of 24 m (80 ft) - commercial office spaces (typical), up to 100m (330 ft) line of sight
  • Quick start-up operation, 2 minutes @ 200 lux
  • Up to 200 hours operation in complete darkness
  • Operates in low light conditions, 15 lux (2 fc)
  • Occupancy override button (in RTS-2HS models)
  • Optional battery start assist
Batteries are not required for everyday operation due to the advanced solar energy harvesting and power management features of the sensor. Upon installation, the sensor will operate with exposure to 200 Lux (20 fc) in as little as 2 minutes. The RTS is capable of operating up to 200 hours in darkness from maximum charge levels.


Temperature 0°C to 40°C (32°F to 104°F) range
 0.3°C (0.5°F) accuracy
Humidity Sensor 20 to 95% range, 3% accuracy
 0.4% resolution
Power SupplyIntegrated solar cell
Operational light level 15 lux (2 fc)
Minimum charge time to begin 
operation2 minutes @ 200 lux (20 fc)
Charging Light Level above 100 lux (10 fc)
Maintain charge time 2 hours per 24 hours @ 200 lux ( 20 fc)
Maximum charge time 6 hours at 200 lux (20 fc)
Operating life at full charge 200 hours @ 0 lux
Battery - start assist CR2032 coin cell (optional - not included)
Inputs Teach Button, Test Button, Set Point Dial*, Fan Speed
 Switch* *Not all models
Outputs Test mode LEDs - red, green, and amber
Radio Frequency 902 MHz(U) or 868 MHz(Y)
Antenna Integrated whip
Transmission Range 24 m (80 ft) - commercial office spaces(typical),
 up to 100m (330 ft) line of sight
 Sampling Rate Telegram Period
Light level > 100 lux (10 fc) 10 seconds on 0.3°C (0.5°F) change or
 10 samples or 3% humidity change
Light level < 100 lux (10 fc) 100 seconds
After 24 hrs @ < 15 lux (2 fc) 200 seconds
Operating Temperature -25°C to 65°C (-13°F to 145°F)
Relative Humidity 5% to 92% RH (non-condensing)
Weight 130 g (4.5 oz)
Dimensions 135 x 72 x 24 mm (5.3 x 2.8 x 0.9”)
Mounting screws or double sided tape (not supplied)
Agency Listing & Compliance902 MHz Models
 FCC Part 15.231 -
Remote Control TransmitterIC RSS-210