2 Channel Serial Port Relay Module RS232 UART Protocol DB9 Interface Remote Control Switch Board TB351

Features 1、Simple operation, most serial commands are single‑byte commands. 2、With capacitor filter circuit, which has improved stability. 3、Onboard 2 relay, which can be accessed extended 2‑way relay module. 4、Two‑channel relay, plus two expansion IO ports, low‑level output. 5、Built to meet standard specification, strictly follow factory quality control. Specification Condition: New Item Type: Relay Switch Board Material: Plastic Color: As picture shown Two-Channel Serial Relay: Channel: Two-channel relay, plus two expansion IO ports, low-level output Interface: DB9 female/male RS232 level, can control the relay on, off, self-locking, inching through the super terminal (serial port debugging software) on the computer. Control Current: 10A Package List 1 x Relay Switch Board