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貨號:DTR0016
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10A大電流繼電器模塊是使用高品質大電流的繼電器,提供常開與常閉的接腳,最高可驅動10A/277VAC、10A/28VDC的設備。
The modular design makes it easy to integrate with a controller board. The Relay integrates a status LED, in order to acknowledge visually it's status ON or OFF. It can be controlled through the digital IO port, with a simple HIGH or LOW on Arduino compatible boards. Other boards will work requiring same voltage level. Other usages include control of solenoid valves, lamps, motors and other high current or high voltage devices.
Application Tutorials of FireBeetle Board - ESP32 BLE: Smarten a Plugboard
What you have seen is a smart plugboard that converted by ESP32 master board and controlled by BLE of ESP32.
Hardware in need: