---
title: "Custom Relay with Chip ESP32 Antenna Wifi/Bluetooth/Ethernet/RS485/Lan W5500/SMA and Battery RTC CR2"
url: "https://maker.wiznet.io/annjaison/resellers/custom-relay-with-chip-esp32-antenna-wifi-bluetooth-ethernet-rs485-lan-w5500-sma-and-battery-rtc-cr2/"
markdown_url: "https://maker.wiznet.io/annjaison/resellers/custom-relay-with-chip-esp32-antenna-wifi-bluetooth-ethernet-rs485-lan-w5500-sma-and-battery-rtc-cr2/md"
type: "VAR: Value-Added Reseller Products"
author: "annjaison"
original_url: "https://id.aliexpress.com/item/1005004650972510.html?spm=a2g0o.productlist.0.0.203562f0reTBZg&algo_pvid=5090f8ec-f1fa-48b5-9dce-6b4fc6408cec&algo_exp_id=5090f8ec-f1fa-48b5-9dce-6b4fc6408cec-25&pdp_ext_f=%7B%22sku_id%22%3A%2212000029980776645%22%7D&pdp_npi=2%40dis%21INR%2113452.28%2113182.81%21%21%213736.32%21%21%402101e9ce16642787621336218e3103%2112000029980776645%21sea&curPageLogUid=z9pmiHQiepLu"
published: "2022-09-27"
language: "en"
likes: 3
views: 1470
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# Custom Relay with Chip ESP32 Antenna Wifi/Bluetooth/Ethernet/RS485/Lan W5500/SMA and Battery RTC CR2

> ER-01 is a customized product combined with ESP32 chip (wifi and bluetooth), Ethernet LAN W5500, homeccomation method rs485.

Original source: https://id.aliexpress.com/item/1005004650972510.html?spm=a2g0o.productlist.0.0.203562f0reTBZg&algo_pvid=5090f8ec-f1fa-48b5-9dce-6b4fc6408cec&algo_exp_id=5090f8ec-f1fa-48b5-9dce-6b4fc6408cec-25&pdp_ext_f=%7B%22sku_id%22%3A%2212000029980776645%22%7D&pdp_npi=2%40dis%21INR%2113452.28%2113182.81%21%21%213736.32%21%21%402101e9ce16642787621336218e3103%2112000029980776645%21sea&curPageLogUid=z9pmiHQiepLu

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Source: https://maker.wiznet.io/annjaison/resellers/custom-relay-with-chip-esp32-antenna-wifi-bluetooth-ethernet-rs485-lan-w5500-sma-and-battery-rtc-cr2/