Alinan 10pcs 1 Channel 3V Relay High Level Relay Power Switch Board, Optocoupler Module Opto Isolation High Level Trigger for IOT ESP8266 Development Board sold2026 Pen Clip Dsign Pen clip

Pen Clip Dsign Pen clip design

Prevent oxidation: specially washed by environmental solvent

Please note that this not waterproof

Shape Double Cut cylinder shape SB-5

Alinan 10pcs 1 Channel 3V Relay High Level Relay Power Switch Board, Optocoupler Module Opto Isolation High Level Trigger for IOT ESP8266 Development Board sold2026 Pen Clip Dsign Pen clipAlinan 10pcs 1 Channel 3V Relay High Level Relay Power Switch Board, Optocoupler Module Opto Isolation High Level Trigger for IOT ESP8266 Development Board 3V 1 Channel Relay Power Switch with Opto Isolation High Level Trigger Optocoupler Isolator: 3V 3. 3V power relay module supports photocoupler isolation control. High Level Trigger: The relay module is triggered by a high level signal(1. 3V), which can be input from microcontroller IO. Long Life: