Features: Long Range: Signal Can Pass Through Walls, Floors And Doors, Steadily Control Receiver From Any Place Within A Reliable Distance. Max Range Is Up To 98ft With No Obstacle. 4ch For More Control: Adjustable Working Way, Control Equipment Turn/Reverse, On/Off. Switch Self-Lock, Jog, Inter-Lock. Security Control: Learning Code Has High-Level Security For Its Low Repetitive Rate And Re-Learn Mode, By Which It Can Delete The Old Code And Re-Learn A New Code When A Remote Control Get Lost, So You Are Always In Control Of It. Easy To Use: Extremely Easy To Setup, Learn, Relearn And Control. Stable And Reliable Performance, High Receive Sensitivity. Wide Application: Wide Range Of Applications From Simple Domestic Remote Control To Autonomous Control Such As, Window, Entrance, Garage Doors, Alarm System, Lifting Equipment And So On.  Specifications: Receiver: Working Voltage: Dc 6-30v Product Type: 4-Channel Remote Control Switch Rf Working Mode: Ask Superheterodyne Reception Modulation Ask Working Mode: Momentary/Toggle/Latched Matching Mode: Intelligent Learning Code: Quiescent Current: 5ma Rf Frequency: 433mhz Output Current: ≤10a Receiving Sensitivity: >104dbm  Transmitter: Operating Rf Frequency: 433mhz Coded System: 1527 Learning Code Working Voltage: Dc 6v Working Current: 15ma Modulation System: Ask Color: Black Remote Control Battery: 2* Cr2032 Battery(battery included)  Wiring Instructions: 1. +: Connect To The Positive 12v Power Supply 2. - : Connect To The Negative Electrode Of 12v Power Supply 3. A: Output; Normally Open End Of The Relay 4. B: Output; Relay Common; 5. C: Output; Normally Closed Relay  Operation Introduction: About Working Mode: 1. Momentary/Joggle: Press And Hold->On; Release->Off Keep Pressing One Button, The Corresponding Channel Is Working /On; Release Your Finger Is Stop/Off. (4 Channel Switch(Receiver) Need 4 Button Remote Control (Transmitter ) 2. Toggle/Self-Lock: Press->On; Press Again->Off Press One Button For One Time, The Corresponding Channel Is Working/On; Press The Same Button Again To Stop/Off. (4 Channel Switch(Receiver) Need 4 Button Remote Control (Transmitter). 3. Latched/Inter-Lock: Press->On; Press Other Button->Off Press One Button For One Time, The Corresponding Channel Is Working/On; Press Another Button Is Stop/Off(At The Same Time, Another Corresponding Channel Works). (4 Channel Switch( Receiver) Need 4 Buttons Remote Control (Transmitter).  Package Includes: 2 X Remote Controls 1 X Relay