... 516*520*520 mmFeatures: Instruction to use: 1.Take off the capping,use the key to open the bottom cover ... to open the cover and turn switch to "OFF" 2.Insert two 1.5V cell batteries into ... /30/60mins 5.Set operation mode with inner switch(OFF,24H,DAY, NIGHT) ,and close the cover,it ... light on----Red light off----Green light on----Green light off----Red light on----Red light off, then machine working ...