Features 1、SPECIFICATIONS: Including 2pcs self locking relay modules, single channel RS trigger circuit, with normally open and normally closed end, stable in connection. 2、EXCELLENT PCB: The on off relay module adopts excellent PCB board, which has stable contacts, safe and reliable operation, with less interference. 3、SIMPLE CONTROL: This single channel relay module can be connected to an external touch switch for remote control, with easy installation and operation. 4、WIDE APPLICATION: Suitable for various applications such as motor that use 2 buttons to control on and off respectively, and has a wide range of applications. 5、EASY INSTALLATION: The relay module has a compact size, easy to install and takes up little space, with standard mounting holes, convenient and reliable. Specification Item Type: 12V Relay Module Material: PCB Current: 10A Product Size: Approx. 54 x 31 x 18mm / 2.1 x 1.2 x 0.7in Normally Open End: The module is disconnected from COM when it is not powered (or off) Normally Close End: The module is connected from COM when it is not powered (or off) Package List 2 x Relay Module