Basic parameters Installation: wall mounting Accuracy: ± 0.5 ℃ (20 ℃ ~ 40 ℃) ℃ Operating voltage: 230VAC / 110VAC / 24VAC V Working environment: 0 ℃ ~ 60 ℃, the range of 0 ~ 100% RH Application: Humidification dehumidification machine supporting; air conditioning and ventilation systems; Building Automation System; room temperature and humidity control output signal: 1-way or 2-way resistive load per channel 5A dry contact output; Modbus RS485 communication options detailed instructions u ?? detect and display the indoor relative Humidity and temperature u ?? high-accuracy temperature and humidity sensors u ?? LCD? displays the current humidity, temperature, set point and working conditions, so that the display and control more accurate and convenient u ?? provides one-way or two-way dry contact point output control humidification / dehumidification equipment; and heating / cooling equipment u ?? convenient panel buttons to set the temperature and humidity control point u ?? rich advanced settings open, convenient end-user self-set according to the specific application; all settings automatically after a power failure Save u? key lock function protection settings to prevent misuse u? infrared remote control (optional) u? Blue backlight (optional) u ?? Modbus RS485? communication? (optional) u? provides an extension cord connected to an external temperature and humidity probe or the temperature and humidity sensor connected to this controller u ?? Plug and Play provides a variety of other high-power temperature and humidity controller ??