... RS-232C, Default communication parameter 9600,n,8,0,1>>Temperature: -20-+70 °C>>Humidity : Relative humidity 95% ... Carton.>>>>>Optional Accessories:Water Overflow Level Sensor, Oil Overflow Level Sensor, Water Leak Sensor, Temperature Sensor, Door Sensor, PIR ... Remote Controller, GPRS RTU Data Logger, GSM Telemetry, Temperature Measurement Logger, Power Monitoring Alarm, GSM M2M Products Manufacturer ...