Feature: 1. [Widely Applicable] Suitable for electrical control circuits of anti theft alarm, remote control electric doors and windows, signal control, industrial control, lifting equipment, etc. 2. [Direct Control] This wireless remote control relay switch module has independent output contacts, which is very suitable for direct control of various loads. 3. [Anti Interference] The RF switch adopts the learning code wireless coding technology (space pairing), no directionality, and the switches do not interfere with each other. 4. [Multi Mode] Self locking, interlocking, and jog, users can freely adjust multiple working modes, which can realize one control with multiple and multiple control with one. 5. [Wide Voltage] The learning code remote control switch has a wide working voltage of DC3.5V‑DC12V, and the remote control has 2 built in 75mAh CR2016 batteries. Specification: Item Type: Relay Remote Switch Material: ABS Working Voltage: DC3.5V-DC12V Wide Range of Working Voltage: DC3.5V 4V 4.5V 5V 6V 9V 12V Maximum Load: 1A (Better Load is Less Than 700mA) Quiescent Current: 3mA Built in Button Battery of Remote Control: 2 x CR2016(75mAh) . Package List: 1 x Relay1 x Remote Control1 x Manual