Item specificsCondition:New: A brand-new， unused， unopened， undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store， unless the item is handmade or was packaged by the manufacturer in non-retail packaging， such as an unprinted box or plastic bag. See the seller´s listing for full details. Connectivity:WirelessDescriptionRemote Control:Working Volt: DC12VFrequency: 315MHzEncoding Type: Fixed codeFiring Range: 100 meterSize: 35x x 55mm x 13mmShock resistance : 4.7MControl Switch System:Operating Voltage: DC12VOperating Frequency: 315MHzReceiver Sensitivity: >-105dBMaximum Load: 10A 250V AC /10 A 30V DCEncoding Type: learning codeSize: 34 x 31 x 18mmWorking: self-locking(Short circuit T)interlock:(Short circuit L)inching (you will received this type)need youself welding T or L change this typepls notice :battery (12v 23A)Package include :100% Brand New High Quality1pcs DC 12v 10A relay 1CH wireless RF