ElecFreaks
16 Channel 5V Mini-Relay Module BK_RL16_01
A compact 16-channel relay module using HUIKE mini-relays, providing optocoupler-isolated control of up to 16 independent circuits. Despite having 16 channel...
A compact 16-channel relay module using HUIKE mini-relays, providing optocoupler-isolated control of up to 16 independent circuits. Despite having 16 channels, the board is close in size to a standard 8-channel relay module thanks to the mini-relay form factor.
Each channel has a dedicated LED indicator showing the relay state, and the board includes a power LED. The optocoupler isolation protects your microcontroller circuit from relay switching noise. An elec-blocks socket allows direct relay control using a shunt cap without requiring an MCU.
Key Features
- 16 Independent Channels – Each with optocoupler isolation and LED status indicator
- Compact Design – Ultra-small volume, close to the size of an 8-channel module
- Optocoupler Isolation – Protects your microcontroller from switching noise
- 5V/12V TTL Control – Compatible with Arduino, Raspberry Pi, PIC, ARM, and MSP430
- Elec-Blocks Socket – Direct relay control via shunt cap (no MCU required)
Specifications
- Drive Voltage – 5V / 12V
- Drive Current – 20 mA per channel
- Control Signal – 5V/12V TTL level
- Max Switching Voltage – 150VAC / 24VDC
- Max Switching Current – 2A
- Relay Type – HUIKE mini-relay
- Indicators – Power LED + 16× channel LEDs
- Mounting Holes – 3 mm
- Dimensions – 85 × 72 mm
- PCB Colour – White
Ideal For
- Home automation and lighting control
- Multi-channel equipment switching
- Arduino and microcontroller relay projects
- IoT control panels
Package Contents
- 1× 16-channel mini-relay module (BK_RL16_01)
Jargon buster
Plain-language definitions for the technical terms used above.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
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