Description: Useful tool: This relay module is designed with AC 250V/30A, and DC 30V/30A maximum load for the constant open interface. Reliable to use: This 1-channel relay is designed with optocoupler isolation and a strong driver and is stable. Adjustable: This relay module allows you to use jump wire to set the high and low level trigger. Easy to connect: With humanized interfaces, this one-way module is convenient to wire and use. Good replacement: This 1-channel relay module is a reliable and has strong performance, and can replace an old or damaged one. Specification: Maximum load: AC 250V/30A, DC 30V/30A. Size(LxWxH): Approx. 72x40x24mm/2.83x1.57x0.94 inch, approx. 86x43x45mm/3.39x1.69x1.77 inch(with bracket). for Bolt hole: Approx. 3.1mm/0.12 inch. for Bolt spacing: Approx. 44.5x27.5mm/1.75x1.08 inch. Relay type: 5V: Static current: 5mAh, maximum current: 190mA, trigger current: 2-4mA. 12V: Static current: 5mAh, maximum current: 80mA, trigger current: 2-4mA. 24V: Static current: 5mAh, maximum current: 50mA, trigger current: 2-4mA. Note: There might be a bit of color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Relay Module.