... (or theillumination is below definite value), slide the switch to “AUTO”, in that time, the PD-LED2033 will detectthe ... body and to achieve the lighting. When slide the switch to “ON”, thePD-LED2033 can light at all ... need it to light at alltimes,when slide the switch to “OFF”, the PD-LED2033 will stop working ... Working humidity: <93%RHWorking temperature: -10~+40°C Infrared Motion Sensor night light