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.