Description: Remote Control: Working Volt: DC12V Frequency: 315MHz Encoding Type: Fixed code Firing Range: 100 meter Size:35xx 55mm x 13mm Shock resistance : 4.7M Control Switch System: Operating Voltage: DC12V Operating Frequency: 315MHz Receiver Sensitivity: !#!gt!*!-105dB Maximum Load: 10A 250V AC /10 A 30V DC Encoding Type:learning code Size: 34 x 31 x 18mm working: self-locking(Short circuit T) interlock:(Short circuit L) inching (you will received this type) need youself welding T or L change this type pls notice :without battery (12v 23A) Package include : 100% Brand New High Quality 1pc DC 12v 10A relay 1CH wireless RF Remote Control Switch Transmitter+ Receiver