Single-Channel Relay Module – 5V, 12V or 24V
Give your control project a clear switching interface
Add a defined switching point to an electronics build with a single-channel relay module. Screw terminals and a selectable trigger jumper make the board a practical component for compatible controller projects in the selected 5V, 12V or 24V version.
- Single relay channel: Keeps the switching function focused on one controlled circuit.
- Optocoupler isolation: Provides the listed control-interface design.
- High/low trigger selection: Lets the jumper configure the supported trigger mode.
- Screw terminals: Give the wiring a defined connection point.
- Status indicators: Show power and relay status at the board.
Lay out your controller, supply and load connections around a board with clearly identified terminals. The dedicated trigger selector makes the switching interface easier to integrate into a planned control assembly.

Frequently Asked Questions
Which supply versions are offered?
5V, 12V and 24V. Use the supply matched to the selected board.
Can I select high or low triggering?
Yes. The jumper selects the HIGH or LOW trigger position.
Which output terminals are listed?
NO, COM and NC.
What board size is listed?
51 × 25.5mm.
What contact limits are listed?
AC 250V/10A and DC 30V/10A maximum contact ratings are stated. The installation and load type must suit the relay and wiring.
SPECIFICATIONS
Application: Computer
Brand Name: OLNYLO
Condition: New
Dissipation Power: --
High-concerned chemical: none
Operating Temperature: --
Origin: Mainland China
Package: SMD
Quantity: 1
Supply Voltage: 5V 12V 24V
Type: Relay Module
Module 51 × 25.5mm. Trigger current 5mA. DC+ supply positive, DC− supply negative. Outputs NO/COM/NC. LOW/HIGH jumper selects trigger mode. Power indicator green; relay indicator red. Listed maximum contacts: AC 250V/10A or DC 30V/10A. Installation and load must suit all component ratings.