Room Temperature Sensors
The STR250 replaces the I/STAT LCD with regard to major functionality such as indoor and outdoor temperature indication, setpoint adjustment,bypass mode and fan speed commands.
The STR250 can be used with the 7728, MRs,and Xenta 102-AX controllers.
TECHNICAL DATA Ambient conditions: Storage -20 to +70 ºC (-4 to 158 ºF) max 90% RH Operation 0 to +50 ºC (32 to 122 ºF) max 90% RH Mechanical Enclosure rating IP20 / NEMA1 Enclosure material PC/ABS plastic Weight 85 g (0.19 lb) Dimensions:(mm) 116X84X24 Standards: EMC EN 61000-6-3 FCC part 15 class B Safety Standard UL 916 (pending) Flammability rating UL 94V-0 Wiring Cable type Twisted pair, unshielded Cable size Min 0.7 mm2 (19 AWG) Distance Max 30 m (100 ft) Temperature range Temperature range and resolution. controller dependent Sensor element 10 kW thermistor Accuracy ±0.6 °C (1.1 °F) Sensor Time Constant 9 min. Temperature resolution, room and setpoint Display 0.1 or 0.5 °C (0.2 or 1 °F) Temperature updates Display 10 sec. Setpoint Value Range 15-30 °C (59 – 86 °F) Span +/- 0 to +/- 5°C (+/- 0 to +/- 10°F)
