| Connectivity Technology | GPIO |
|---|---|
| Operating System | FreeRTOS |
| Processor Brand | ARM |
| Compatible Devices | [INFERRED: Compatible with certain single-board computers] |
| Processor Count | 1 |
| Total Usb Ports | 1 |
| Built In Media | 3 x Optocoupler Module |
| Item Length | 1 |
| Item Height | 1 |
| Item Width | 1 |
Check the listing for details. 3Pcs 1Channel AC Optocoupler Module 220V Voltage Detect Optocoupler Isolation. Condition: New. Listed at 22.54 USD. 1 Channel 220V AC optocoupler module can be used to detect the presence or absence of 220V AC power. When detecting 220V input, the LED light is on, and the optocoupler is conducting and outputting a low level.