TB351 2-Channel Serial Port Relay Module with RS232 Protocol, UART Protocol, DB9 Interface, and Remote Control Switching Board

1. Simple operation; most serial commands are single-byte commands. 2. With a capacitor filter circuit, which has improved stability. 3. Built-in relay 2, accessible via the extended bidirectional relay module. 4. Two-channel relay, plus two expansion IO ports, low-level output. 5. Built to meet standard specifications, strictly following factory quality control.

Specification:

Condition: 100% Brand New Item Type: Relay Switching Board. Material: Plastic Color: As the picture shown Two-channel serial relay: Channel: Two-channel relay, plus two expansion IO ports, low-level output Interface: DB9 level RS232 female/male, can control the relay on, off, self-locking, passing through the super terminal (serial port debugging software) on the computer.

Operating voltage: 12V DC power supply (range: 8.5-13.5V) Control voltage: DC 9V 12V or DC 1-48V or AC 85-265V Control current: 10A Package list: 1 x Relay switching board