{"product_id":"esp32-s3-expansion-board-wifi-mqtt-iot-sensors-relay-ess3b18","title":"ESP32 S3 Expansion Board WiFi MQTT IoT Sensors Relay ESS3B18","description":"\u003cp\u003e\u003cspan style=\"color: rgb(54, 88, 226); font-size: 22px; font-family: Arial;\"\u003eIt features a variety of input\/output expansion functions. eletechsup focuses on exploring the capabilities of the ESP32 and produces a wide range of expansion boards. However, there are still many applications we haven't considered; we welcome suggestions from our customers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 22px; font-family: Arial;\"\u003e   \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 22px; font-family: Arial;\"\u003eProduct Features: 1 Operating voltage: Wide voltage DC 7-28V 2 Operating Current : Standby current 20MA, 1 relay open 55MA, 2 relays open 86MA, 3 relays open 125MA, 4 relays open 158MA 3 size 135*72*19mm(Only Board) 4 Weight : 96g(Only Board), 195g(with shell) \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 22px; font-family: Arial;\"\u003e  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(54, 88, 226); font-size: 22px; font-family: Arial;\"\u003eOnboard Resources 2CH 0\/4-20MA Current Input 2CH 0-5V\/10V Voltage Input 1CH Digital temperature \u0026amp; humidity sensor input(AM2301\/DS18B20\/SHT20\/SHT30) 1CH Analog sensor input(ACS712) 4CH NPN Digital Input 4CH 10A Relay Output 1CH RS485 Port 1CH UART PORT(TTL) 1CH LED 1CH Button 14CH Free Port \u003c\/span\u003e\u003cspan style=\"font-size: 22px; font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 22px; font-family: Arial;\"\u003e  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 22px; font-family: Arial;\"\u003eAs long as you write ESP32 code,You can use it to achieve a variety of delay timer function,such as: WIFI Remote control switch WIFI Current and voltage collection RS485 Master-Slave Device(PLC MCU), 2x 0\/4-20MA Current Collection, 2x 0-5V\/10V Voltage Collection, 1x Temperature and humidity collection MQTT,HTTP,WEB Remote control switch Motor forward and reverse, Timing on, Timing off, Power-up delay, Trigger delay, Infinite loop delay, A finite number of cyclic delays, Power sequencer, And so on. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 22px; font-family: Arial;\"\u003e  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(54, 88, 226); font-size: 22px; font-family: Arial;\"\u003eThis is an expansion board based on 44PIN ESP32 S3. We only provide some Arduiuo codes for testing the hardware. More codes and functions need to be developed by yourself. If you need more functionality, write your own code. We do not provide additional code and technical support\u003c\/span\u003e\u003cspan style=\"font-size: 22px; font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 22px; font-family: Arial;\"\u003e  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(225, 60, 57); font-size: 22px; font-family: Arial;\"\u003eNote: 1 The ESS3B18 is an expansion board without a core board and cannot work independently., must be under the control of the ESP32 S3 board to work,If you do not have a ESP32 S3 board, purchase it separately or purchase a kit with ESP32 S3 \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(225, 60, 57); font-size: 22px; font-family: Arial;\"\u003e 2 This specification of ESP32 S3 board must be used: 1. 44 pins. 2. Pin header spacing 25.4mm (total width approximately 28mm). \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(225, 60, 57); font-size: 22px; font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(225, 60, 57); font-size: 22px; font-family: Arial;\"\u003e3 The IN1-IN4 input ports reuse the FLASH pins. If you need to use FLASH, please use the free ports as input ports.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/publish-cos.mabangerp.com\/upload\/privatepublish\/aliexpress\/900096\/20261022\/179263744112606400798.jpg\" alt=\"\" data-href=\"\" style=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/1700\/0192\/files\/179263744452956700593.jpg?v=1792748363\" alt=\"\" data-href=\"\" style=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/1700\/0192\/files\/179263744853108600250.jpg?v=1792748364\" alt=\"\" data-href=\"\" style=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0858\/1700\/0192\/files\/179263745062370200303.jpg?v=1792748365\" alt=\"\" data-href=\"\" style=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(225, 60, 57); font-size: 22px; font-family: Arial;\"\u003e \u003c\/span\u003e\u003c\/p\u003e","brand":"eletechsup","offers":[{"title":"only Board","offer_id":50745044926720,"sku":"ESS3B18","price":20.33,"currency_code":"USD","in_stock":true},{"title":"With DIN Shell","offer_id":50745044959488,"sku":"ESS3B18_R","price":23.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/1700\/0192\/files\/900096202610231738136adb2b05cee7d.jpg?v=1792748369","url":"https:\/\/www.eletechsups.com\/products\/esp32-s3-expansion-board-wifi-mqtt-iot-sensors-relay-ess3b18","provider":"eletechsup","version":"1.0","type":"link"}