2 Channel Relay Switch Module Serial Port Low Level Trigger Micro USB Relay Module RS232 UART Protocol DB9 Interface Remote Control Switch Board

• High Quality: The onboard 2 relay is made of high quality plastic meterial, durable, which can be accessed extended 2‑way relay module, has good performance.
• Easy to Operate: The serial control relay switch board has simple operation, most serial commands are single‑byte commands, can improve work efficiency, save time and energy.
• Stability: The relay switch board has capacitor filter circuit, which has improved stability, with two‑channel, plus two expansion IO ports, low‑level output.
• Feature: The 2 channel relay switch board is compact design, easy to carry and store, very practical in work, built to meet standard specification, can bring you more convenience.
• Quality Assurance: The serial relay switch is manufactured under strict quality control and standard requirements, and has a high safety factor, so it can be used with confidence.

Feature: 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: Brand 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. Working Voltage: DC 12V 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 Switch Board