Product Description:
The A16 ESP32 Relay Board is a powerful and versatile IoT automation controller designed for smart home, industrial, and remote monitoring applications. Powered by the ESP32 dual-core processor, it supports Ethernet and Wi-Fi connectivity, multiple sensor interfaces, and open-source firmware such as ESPHome, Tasmota, Tuya, and Arduino IDE, making it a flexible platform for both developers and automation enthusiasts.
With 16 digital relay outputs, 4 analog inputs, RS485 (MODBUS), I2C expansion, and RF 315/433MHz communication, the A16 board enables control and monitoring of a wide range of devices — from lights and pumps to sensors and meters. It also supports temperature and humidity sensors (DHT11, DS18B20), pressure sensors, and water level detection.
Whether you’re building a smart home, industrial automation system, or IoT gateway, the A16 board delivers the connectivity and compatibility you need for MQTT, IFTTT, and LAN-based control.
Key Features:
16-channel digital relay outputs – control 12V/24V loads directly
Wi-Fi and Ethernet connectivity – for flexible network communication
RS485 (MODBUS) support – connect industrial meters or sensors
RF 315/433MHz transceiver interface – control via wireless remotes or switches
Analog inputs (4 total):
Channels 1–2: 4–20mA sensors (e.g., pressure sensors)
Channels 3–4: 0–5V sensors (e.g., water level sensors)
Temperature & Humidity Sensor Ports:
Compatible with DHT11, DS18B20, and other 1-Wire sensors
Multiple DS18B20 sensors can share one GPIO
I2C expansion port – add up to 8 additional relay outputs (24 total channels with DO8 module)
Compatible with:
ESPHome, Tasmota, Arduino IDE, Tuya, MQTT, IFTTT
MOSFET-based power regulation, supports DC 12V / 24V input
Fully programmable via Arduino IDE, sample codes available at kincony.com
Online tutorials and support through Kincony’s YouTube channel and forum
Technical Specifications:
| Parameter | Description |
|---|
| MCU | ESP32 Dual-Core Wi-Fi + Bluetooth |
| Relay Channels | 16 Channels (12V/24V compatible) |
| Digital Inputs | 16 (door, PIR, smoke, or gas sensors) |
| Analog Inputs | 4 total (2 × 4–20mA, 2 × 0–5V) |
| Communication | Ethernet, Wi-Fi, RS485 (MODBUS), RF 315/433MHz |
| Expansion | I2C port for relay or sensor extension |
| Sensor Support | DHT11, DS18B20, pressure sensors, water level detectors |
| Output Voltage | 12V / 24V DC |
| Power Input | DC 12V or 24V |
| Supported Firmware | ESPHome, Tasmota, Arduino IDE, Tuya, MQTT, IFTTT |
| Protection | MOSFET power regulation, reverse voltage protection |
Applications:
Smart Home Automation
Industrial Equipment Control
IoT Data Acquisition Systems
Environmental Monitoring (Temperature, Humidity, Pressure)
Remote Device Management via LAN or Cloud
Energy and Power Meter Integration (MODBUS RS485)
Package Includes:
Resources & Support:
Example Arduino Code, ESPHome YAML, and Documentation available at:
Kincony Official Website
Tutorial Videos: Kincony Official YouTube Channel
Community Help: Kincony Forum & WhatsApp Support
Why Choose This Board?
The A16 ESP32 Smart Relay Board combines multi-protocol communication, rich sensor compatibility, and 16-channel control in one device. Its open-source ecosystem allows integration with Tasmota, Tuya, MQTT, and ESPHome, making it an all-in-one solution for smart automation, IoT development, and networked control applications.
Control smarter, automate faster — build your next IoT or home automation system with the A16 ESP32 Relay Board!
