Description
The module is uses SRD relay module to control high-votage elecrical devices. (maximum 250V).It can be used in interactive projects and can also be used to control the lighting, electrical and other equipments.It can be controlled directly by a wide range of microcontrollers and can be controlled through the digital IO port, such as solenoid valves, lamps, motors and other high current or high voltage devices.

Specification
Number of I/O Channels: 1
Type: Digital
Switching capacity available by 10A in spite of small size design for highdensity P.C. board mounting technique.
Control signal: TTL level
Max. Allowable Voltage: 250VAC/110VDC
Max. Allowable Power Force: From C(800VAC/240W), From A(1200VA/300W)

Read more: http://www.elecfreaks.com/store/1-channel-5v-relay-module-arduino-compatible-bk008-p-259.html#ixzz3OYLPxqFB