plastic flame retardant bottom shell, safe and worry-free to use Measurement accuracy to ±0.3°C/±3%RH The sensor cable is 100cm long, making the measurement more Convenient and fast Product name: Intelligent temperature and humidity controller Product model: W1212 Power supply voltage: AC110-220V Working frequency: 50HZ Measuring range: -40°C-120°C 0-00%RH Measurement accuracy: temperature ± 0.3°C, humidity ± 3%RH Sensor cable length: 100CM Tips: In normal mode, short the setting key or plus and minus keys to view the setting parameters, it return to normal mode after 1 second. In the setting mode, if no key is pressed, it automatically return to the normal working mode after 10 seconds. In the setting mode, when a certain option value is set, if the power button is not pressed to confirm the return, it automatically return to the normal working mode after 10 seconds, and the value not be saved. Colour:As Shown Material:plastic Package Contents: 1 x Aquarium Thermostat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.