{"product_id":"esp32-38pin-io-expansion-board-es32a08-relay-es33b08-opto-isolated-input-4x-0-10v-4x-4-20ma-digital-tube-display-automation","title":"ESP32 38PIN IO Expansion Board ES32A08 Relay ES33B08 Opto-isolated Input 4x 0-10V 4x 4-20MA Digital Tube Display Automation","description":"\u003cp\u003e\u003cspan style=\"color: rgb(255, 0, 0); font-size: 24px;\"\u003eNote!!! PWR LED does not light up when powered on. Driven by the IO port of the ESP32\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n \u003cbr\u003e\n \u003cbr\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cstrong\u003eProduct Features:\u003c\/strong\u003e\u003c\/span\u003e\n \u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-family:arial, helvetica, sans-serif\"\u003e\u003cspan style=\"font-size:18px\"\u003e1 Operating voltage: DC 12V\/24V\u003cbr\u003e\n    2 \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size:18px\"\u003eOperating Current : Standby current (Digital tube OFF) 14MA, Standby current 51MA (Digital tube ON), 1 relay open 76MA, 2 relays open 107MA, ... 8 relays open 291MA\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family:arial, helvetica, sans-serif\"\u003e\u003cspan style=\"font-size:18px\"\u003e3 \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size:18px\"\u003eOn-board resources: 1x RS485 Interface 8x opto-isolated inputs (low level trigger, NPN type), 4x 0\/4-20MA Current Input,4x 0-5V\/10V Voltage Input,4x buttons, 1x 4 bit digital tube display, 1x ESP32 slots, 8x relay outputs\u003c\/span\u003e \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-family:arial, helvetica, sans-serif\"\u003e\u003cspan style=\"font-size:18px\"\u003eES32A08\u003cbr\u003e\n    Relay Module:\u003cbr\u003e\n    4 size 180*72*20mm(Only Board)\u003cbr\u003e\n    5 Weight : 189g(Only Board), 317g(with shell)\u003cbr\u003e\u003cbr\u003e\n    ES33B08\u003cbr\u003e\n    Darlington tube Module:\u003cbr\u003e\n    4 size 123*72*20mm(Only Board)\u003cbr\u003e\n    5 Weight : 93g(Only Board), 184g(with shell) \u003c\/span\u003e\u003c\/span\u003e \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"color:rgb(0, 0, 205)\"\u003e\u003cspan style=\"font-size:22px\"\u003ePlease contact me for more information!\u003c\/span\u003e\u003c\/span\u003e \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"color:rgb(165, 42, 42)\"\u003e\u003cspan style=\"font-family:arial, helvetica, sans-serif\"\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cstrong\u003ePurchase Notes:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"color:rgb(165, 42, 42)\"\u003e\u003cspan style=\"font-family:arial, helvetica, sans-serif\"\u003e\u003cspan style=\"font-size:18px\"\u003e1 ES32A08\/ES33B08 can not work independently, must be under the control of the 38PIN ESP32 board to work,If you do not have a 38PIN ESP32 board, purchase it separately or purchase a kit with 38PIN ESP32\u003cbr\u003e\n     2 This is an expansion board based on 38PIN ESP32. We only provide three vscode codes for testing the hardware. More codes and functions need to be developed by yourself.\u003cbr\u003e\n     3 If you need more functionality, write your own code. We do not provide additional code and technical support\u003cbr\u003e\n     4 The acquisition accuracy of analog quantities is determined by the ESP32 board. It is recommended to collect multiple times to obtain the average value.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"color:rgb(0, 0, 255)\"\u003e\u003cspan style=\"font-size:18px\"\u003e\u003cstrong\u003eApplication examples:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e \u003cbr\u003e\u003cbr\u003e\u003cspan style=\"color:rgb(0, 0, 255)\"\u003e\u003cspan style=\"font-size:18px\"\u003eAs long as you write ESP32 code,You can use it to achieve a variety of delay timer function,such as:\u003cbr\u003e\n    WIFI remote control switch\u003cbr\u003e\n    WIFI Current and voltage collection\u003cbr\u003e\n    RS485 Master-Slave Device(PLC MCU),\u003cbr\u003e\n    4x 0\/4-20MA Current Collection,\u003cbr\u003e\n    4x 0-5V\/10V Voltage Collection,\u003cbr\u003e\n    Motor forward and reverse,\u003cbr\u003e\n    Timing on,\u003cbr\u003e\n    Timing off,\u003cbr\u003e\n    Power-up delay,\u003cbr\u003e\n    Trigger delay,\u003cbr\u003e\n    Infinite loop delay,\u003cbr\u003e\n    A finite number of cyclic delays,\u003cbr\u003e\n    Power sequencer,\u003cbr\u003e\n    And so on.\u003c\/span\u003e\u003c\/span\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n \u003cdiv\u003e\n  \u003cbr\u003e\n  \u003cbr\u003e\n  \u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/1700\/0192\/files\/1786199659456rfo_1784177118823.jpg?v=1789461401\" slate-data-type=\"image\" class=\"\"\u003e\n  \u003cbr\u003e\n \u003c\/div\u003e\n \u003cbr\u003e\n \u003cdiv\u003e\n  \u003cdiv\u003e\n   \u003cbr\u003e\n   \u003cbr\u003e\n   \u003cbr\u003e\u003cspan style=\"font-size:20px\"\u003e\u003cstrong\u003eApplication 1: Through the programming of 38Pin ESP32, various delay customization functions can be realized instead of PLC.\u003c\/strong\u003e\u003c\/span\u003e\n   \u003cbr\u003e\n   \u003cbr\u003e\n   \u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/1700\/0192\/files\/1791483951253nlq_1789461400644.jpg?v=1789461404\" slate-data-type=\"image\" class=\"\"\u003e\n   \u003cbr\u003e\n   \u003cbr\u003e\n   \u003cbr\u003e\n   \u003cbr\u003e\u003cspan style=\"font-size:20px\"\u003e\u003cstrong\u003eApplication 2: It can be used as an RS485 master device instead of PLC\/PC\/touch screen to control various RS485 slave devices.\u003c\/strong\u003e\u003c\/span\u003e\n   \u003cbr\u003e\n   \u003cbr\u003e\n  \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv\u003e\n  \u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/1700\/0192\/files\/1786199660999afr_1784177120408.jpg?v=1789461403\" slate-data-type=\"image\" class=\"\"\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c\/p\u003e","brand":"Eletechsup","offers":[{"title":"12V Relay Only Board","offer_id":49764732403968,"sku":"ES32A08_12V","price":28.18,"currency_code":"USD","in_stock":true},{"title":"24V Relay Only Board","offer_id":49764732436736,"sku":"ES32A08_24V","price":28.18,"currency_code":"USD","in_stock":true},{"title":"12V Relay With Shell","offer_id":49764732469504,"sku":"ES32A08_R_12V","price":31.21,"currency_code":"USD","in_stock":true},{"title":"24V Relay With Shell","offer_id":49764732502272,"sku":"ES32A08_R_24V","price":31.21,"currency_code":"USD","in_stock":true},{"title":"300MA OUT Only Board","offer_id":49764732535040,"sku":"ES33B08","price":22.12,"currency_code":"USD","in_stock":true},{"title":"300MA OUT With Shell","offer_id":49764732567808,"sku":"ES33B08_R","price":24.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/1700\/0192\/files\/900096202609151631586aa9027e69507.jpg?v=1789461395","url":"https:\/\/www.eletechsups.com\/products\/esp32-38pin-io-expansion-board-es32a08-relay-es33b08-opto-isolated-input-4x-0-10v-4x-4-20ma-digital-tube-display-automation","provider":"eletechsup","version":"1.0","type":"link"}