Features: One-button bistable relay module, the welding position of the external suction indicator light is reserved. Adopts printed circuit board designed, MCU-control, stable and reliable performances, strong anti-interference. High-power voltage regulatorprovides sufficient and stable voltage and has sufficient heat dissipation holes to ensure the long-term stable and reliable operation of the product. Equipped withgood seat and leading wire, more convenient to use. Use the relay to control the load, the load under AC250V 10A and DC30V 10A can be endured. Specifications: Material: Printed Circuit Board Size: Approx. 52x37x26mm/2.05x1.46x1.02inch Power Supply Voltage: 12V Note: Please allow 0-1cm error due to manual measurement, make sure you do not mind before you order. Please allow for slight color differences due to different monitor resolutions. Package includes: 1x Bistable Relay Module