Features: 1. Contact Capacity 10A 250V with optocoupler protection. 2. The built-in power module requires no external power supply. 3. Port controller I/O is active low. 4. Can be used as an MCU development board module, appliance control, extended output, etc. 5. Features excellent industrial optocoupler isolation, anti-interference performance, and stability. 6. Each common relay is independent and easy to use for accessing various signals, with port normally closed/open and an action indicator. 7. User-friendly interface design, all interfaces can be directly drawn through the terminal block, very convenient. Specification: Supply Voltage: 5V Drive Voltage: 5V Contact Capacity: 10A 250V Package Weight: Approx. 209g / 7.4oz Package List: 1 x 16-Channel Relay Module Note: Please note that the new type and old type of this product will be sent randomly, and please ensure you don't mind before ordering.