HIGH QUALITY - High quality plastic shell and highly conductive copper, environmentally friendly, excellent performance, safe and durable to usePROGRAMMABLE - A programmable stopwatch. Energy-saving, the timing range can be controlled by the switch button, and no need to take care of it. AUTOMATICALLY - The timer allows electrical appliances to work the setting time and then stops automatically SWITCH BUTTON - Easy to operate, you can adjust the time range by the switch button. WIDE USAGE - Can be installed instead of wall switch to control water pump, fan, water heater, heater router, fish tank, lamp, other household appliances, etc. Note: The data are all manual measurement, please allow 1-81cm error, due to the difference of light and display, there will be some color difference, depending on the physical item received.