Feature: 1. [WORKING VOLTAGE] The 12V single channel remote control switch adopts 2A relay, the working frequency is 433MHz, and the working voltage is DC3.7‑12V. 2. [WITH LEARNING BUTTON] This RF wireless remote control switch can learn multiple remote controls, and all buttons of each remote control can be learned. 3. [EASY TO OPERATE] The switch can be controlled by one remote control multiple switches, or multiple remote controls can control one switch, flexible and arbitrarily combined. 4. [PARAMETERS] The wireless remote control switch adopts latching, momentary and interlocking working methods, and there are 2 built in CR2016 (75mAh) button batteries. 5. [HIGH QUALITY MATERIAL] The relay wireless remote control switch is made of high quality ABS material, which is strong, stable, durable and can be used for a long time. Specification: Item Type: Switch Module Material: ABS Working Voltage: DC3.7-12V Operating Frequency: 433MHz Output Mode: Switch Signal Maximum Load: 2A Working Mode: Latching, Momentary, Interlock (Switching Through Pads) Remote Control Built in Button Battery: 2 x CR2016(75mAh). Package List: 1 x Switch Module1 x Remote Control1 x Manual