through the module can be achieved through the Internet or within the network control relay module, in order to achieve remote control of electrical switches to achieve centralized power management purposes. Applies to: Home decoration, hotel, shopping malls, cafes, Cara oK regular management, daily office, physical shop monitoring, networking, industrial equipment, test equipment power control, unmanned, underground pipelines, mining equipment, ships, Machine room station, street lamp management, intelligent management, centralized management. When connecting the high-voltage power supply module, please pay attention to the wiring to avoid damage caused by short circuit. Maximum power with load: 5W Relay load capacity: 250VAC 10A (2500W AC) or 30VDC 10A (300W) The actual use of power to the relay within the nominal 70%, so as not to affect the service life The maximum life of the relay: 1 million times Operating temperature: -30 ~ 85 Celsius Relay can directly control a variety of devices and loads; There are 8 normally open and 8 normally closed contacts; KF301 terminal access control line more convenient. net weight: 150g colour:white Material:metal+Plastic size:138*56*18.5mm Package Contents:1x Internet of Things Only the above package content, other products are not included. Note: Light shooting 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.