{"id":8115373047988,"title":"3V Relay Power Switch Board, APKLVSR 1-Channel Optocoupler Module Opto Isolation High-Level Trigger, 5 Pieces 1-Channel Relay 3V Module for IOT ESP8266 Microcontroller Development Board","handle":"3v-relay-power-switch-board-apklvsr-1-channel-optocoupler-module-opto-isolation-high-level-trigger-5-pieces-1-channel-relay-3v-module-for-iot-esp8266-microcontroller-development-board","description":"\u003ch3\u003e3V Relay Power Switch Board, APKLVSR 1-Channel Optocoupler Module Opto Isolation High-Level Trigger, 5 Pieces 1-Channel Relay 3V Module for IOT ESP8266 Microcontroller Development Board\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e1-channel 3V\/3.3V relay high-level driver module, optocoupler 3V relay module,\ninsulated drive control board for ESP8266 development board. Built-in signal\noutput indicator, cable connection and installation holes, compatible with 10A\n250VAC and 10A 30VDC load Module size: 70mm x 17mm x 20mm \/ 2.76 x 0.70 x 0.79\ninches (L x W x H). Relay Module: SRD-DC03V-SL-C; Channel: 1 channel; Working\nVoltage: DC 3-3.3V; Compatible load: 10A 250VAC \/ 10A 30VDC; Current wide\ndetection range: DC0-25V input Single socket length: 7.5 mm. Main chip: EL817,\nSRD-DC03V-SL-C Power interface: VCC: Connect to the positive pole of the power\nsupply (3.3V) GND: Connect to the negative pole of the power supply. IN: High\nlevel control relay retraction Charging interface: NO: Normally open interface\nof the relay, the relay is stopped before retracting and shorted with COM\nafter retracting COM: Common relay interface NC: Normally closed interface of\nthe relay. The relay is short-circuited with COM before retracting and remains\nstuck after retracting jumper caps JP1 is used to connect VCC of the signal\nterminals and V+ of the relay. JP2 is used to connect the GND of the signal\nterminals and V+ of the relay. The high-level signal, which is above 1.3V to\nIN can trigger the relay. Features Instructions with signal output. The signal\ninput port can connect the microcontroller IO port, a high level signal The\nanti-interference ability of the double power selection design is strong, the\nphotoelectric insulation protection of high reliability One diode current\nprotection Fast response time, less than 20ms, long service life, up to\n100,000 snapshots, response time is less than 20 milliseconds The long service\nlife of the relay\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eOptocoupler insulator: 1-channel 3 3V relay power relay module supports the optocoupler isolation control; supports double power supply input and ensures high anti-interference ability.\u003c\/li\u003e\n \u003cli\u003eOptocoupler module 30 VDC 250 VAC load: Equipped with high current relay, AC250 V 10 A; DC30 V 10 A, each relay normally has open and normally closed contact. Can be selected by jumper relay and TTL or ground.\u003c\/li\u003e\n \u003cli\u003eHigh-level trigger: the optocoupler 3 V isolator relay module is triggered by a high-level signal that can be input from the microcontroller IO.\u003c\/li\u003e\n \u003cli\u003eWide application: this 3V relay board works well with ARM\/PIC\/AVR\/MCU\/Raspberry\/CNC machines\/PS4\/3.3V\/NodeMCU\/E-SP-8266 modules, etc.\u003c\/li\u003e\n \u003cli\u003eLong service life: optocoupler isolator relay 3 V module, fast response time of less than 20 ms and long service life of up to 100,000 snaps, with diode freewheel protection.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-09-02T10:41:25+10:00","created_at":"2026-09-02T00:21:19+10:00","vendor":"APKLVSR","type":"Microcontrollers","tags":["industrial_DE_Aug2026"],"price":11600,"price_min":11600,"price_max":11600,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":44375101833396,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"de-B0CCS1QS39","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"3V Relay Power Switch Board, APKLVSR 1-Channel Optocoupler Module Opto Isolation High-Level Trigger, 5 Pieces 1-Channel Relay 3V Module for IOT ESP8266 Microcontroller Development Board","public_title":null,"options":["Default Title"],"price":11600,"weight":120,"compare_at_price":null,"inventory_management":"shopify","barcode":"V0310","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/auspowers.com\/cdn\/shop\/files\/de-B0CCS1QS39.jpg?v=1788272482","\/\/auspowers.com\/cdn\/shop\/files\/51ZAnUwGJlL.jpg?v=1788272482","\/\/auspowers.com\/cdn\/shop\/files\/51UaYZNFukL.jpg?v=1788272482","\/\/auspowers.com\/cdn\/shop\/files\/41EfZ2Vy9ZL.jpg?v=1788272482","\/\/auspowers.com\/cdn\/shop\/files\/51ObxT18HJL.jpg?v=1788272482","\/\/auspowers.com\/cdn\/shop\/files\/41Q99yPQ1UL.jpg?v=1788272482","\/\/auspowers.com\/cdn\/shop\/files\/41kjkj0aw1L.jpg?v=1788272481"],"featured_image":"\/\/auspowers.com\/cdn\/shop\/files\/de-B0CCS1QS39.jpg?v=1788272482","options":["Title"],"media":[{"alt":null,"id":33273785122996,"position":1,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/de-B0CCS1QS39.jpg?v=1788272482"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/de-B0CCS1QS39.jpg?v=1788272482","width":500},{"alt":null,"id":33273785155764,"position":2,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/51ZAnUwGJlL.jpg?v=1788272482"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/51ZAnUwGJlL.jpg?v=1788272482","width":500},{"alt":null,"id":33273785188532,"position":3,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/51UaYZNFukL.jpg?v=1788272482"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/51UaYZNFukL.jpg?v=1788272482","width":500},{"alt":null,"id":33273785221300,"position":4,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/41EfZ2Vy9ZL.jpg?v=1788272482"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/41EfZ2Vy9ZL.jpg?v=1788272482","width":500},{"alt":null,"id":33273785254068,"position":5,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/51ObxT18HJL.jpg?v=1788272482"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/51ObxT18HJL.jpg?v=1788272482","width":500},{"alt":null,"id":33273785286836,"position":6,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/41Q99yPQ1UL.jpg?v=1788272482"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/41Q99yPQ1UL.jpg?v=1788272482","width":500},{"alt":null,"id":33273785319604,"position":7,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/auspowers.com\/cdn\/shop\/files\/41kjkj0aw1L.jpg?v=1788272481"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/auspowers.com\/cdn\/shop\/files\/41kjkj0aw1L.jpg?v=1788272481","width":500}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003e3V Relay Power Switch Board, APKLVSR 1-Channel Optocoupler Module Opto Isolation High-Level Trigger, 5 Pieces 1-Channel Relay 3V Module for IOT ESP8266 Microcontroller Development Board\u003c\/h3\u003e\n\u003cp id=\"b\"\u003e1-channel 3V\/3.3V relay high-level driver module, optocoupler 3V relay module,\ninsulated drive control board for ESP8266 development board. Built-in signal\noutput indicator, cable connection and installation holes, compatible with 10A\n250VAC and 10A 30VDC load Module size: 70mm x 17mm x 20mm \/ 2.76 x 0.70 x 0.79\ninches (L x W x H). Relay Module: SRD-DC03V-SL-C; Channel: 1 channel; Working\nVoltage: DC 3-3.3V; Compatible load: 10A 250VAC \/ 10A 30VDC; Current wide\ndetection range: DC0-25V input Single socket length: 7.5 mm. Main chip: EL817,\nSRD-DC03V-SL-C Power interface: VCC: Connect to the positive pole of the power\nsupply (3.3V) GND: Connect to the negative pole of the power supply. IN: High\nlevel control relay retraction Charging interface: NO: Normally open interface\nof the relay, the relay is stopped before retracting and shorted with COM\nafter retracting COM: Common relay interface NC: Normally closed interface of\nthe relay. The relay is short-circuited with COM before retracting and remains\nstuck after retracting jumper caps JP1 is used to connect VCC of the signal\nterminals and V+ of the relay. JP2 is used to connect the GND of the signal\nterminals and V+ of the relay. The high-level signal, which is above 1.3V to\nIN can trigger the relay. Features Instructions with signal output. The signal\ninput port can connect the microcontroller IO port, a high level signal The\nanti-interference ability of the double power selection design is strong, the\nphotoelectric insulation protection of high reliability One diode current\nprotection Fast response time, less than 20ms, long service life, up to\n100,000 snapshots, response time is less than 20 milliseconds The long service\nlife of the relay\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003eOptocoupler insulator: 1-channel 3 3V relay power relay module supports the optocoupler isolation control; supports double power supply input and ensures high anti-interference ability.\u003c\/li\u003e\n \u003cli\u003eOptocoupler module 30 VDC 250 VAC load: Equipped with high current relay, AC250 V 10 A; DC30 V 10 A, each relay normally has open and normally closed contact. Can be selected by jumper relay and TTL or ground.\u003c\/li\u003e\n \u003cli\u003eHigh-level trigger: the optocoupler 3 V isolator relay module is triggered by a high-level signal that can be input from the microcontroller IO.\u003c\/li\u003e\n \u003cli\u003eWide application: this 3V relay board works well with ARM\/PIC\/AVR\/MCU\/Raspberry\/CNC machines\/PS4\/3.3V\/NodeMCU\/E-SP-8266 modules, etc.\u003c\/li\u003e\n \u003cli\u003eLong service life: optocoupler isolator relay 3 V module, fast response time of less than 20 ms and long service life of up to 100,000 snaps, with diode freewheel protection.\u003c\/li\u003e\n \u003c\/ul\u003e"}