Multi-Channel Relay Board

In modern electronic security and automation setups, low-voltage control boards (such as biometric access terminals, GSM dialers, or alarm mainframes) often need to switch high-power devices like electric door strikes, magnetic locks, sirens, or motorized gates. Direct connection will instantly fry your control logic. Biosys Solutions Ltd provides the ideal bridge with our professional-grade Multi-Channel Relay Board—designed to deliver safe, isolated, and robust circuit switching.

Advanced Optocoupler Isolation for Maximum Safety Electrical noise and voltage spikes can severely damage sensitive access control hardware. Our relay boards feature built-in optocoupler isolation chips, creating a physical barrier that separates your low-voltage control triggers from the high-voltage load circuit. This ensures superior signal stability, prevents false triggering, and protects your master security controllers from back-EMF surges.

Versatile Multi-Channel Configurations Whether you are deploying a simple 2-channel circuit to trigger a gate lock and a strobe light simultaneously, or configuring an 8-channel board for complex smart building automation, our relay modules give you independent control per channel. Each relay is equipped with standard Normally Open (NO) and Normally Closed (NC) dry contacts, providing absolute wiring flexibility for any project.

Built for the Kenyan Engineering Environment Sourced to meet rigorous quality standards, these boards feature durable screw terminals for secure cable retention, high-grade switching transistors, and clear LED operational lights so technicians can instantly diagnose active states during site commissioning. Trust Biosys Solutions Ltd for genuine electronic modules, expert technical advice, and reliable delivery across Kenya.

Key Features & Product Specifications

• Optical Isolation (Optocoupler): Protects control microcontrollers and access panels from power surges, voltage spikes, and electrical noise.

• Flexible Channel Options: Available in popular multi-channel configurations (e.g., 2, 4, or 8 channels) to suit diverse automation scales.

• High-Capacity Switching: Capable of safely handling high-current AC and DC loads (typically up to 10A @ 250V AC or 30V DC per channel).

• NO/NC Dry Contacts: Features standard Normally Open and Normally Closed outputs for universal compatibility with electric locks, alarms, and lights.

• Status LED Indicators: Onboard red/green LED lights provide instant visual confirmation of relay activation status for quick troubleshooting.

• Easy Wire Termination: Heavy-duty screw terminals allow fast, secure connection using standard security control wires.

Frequently Asked Questions (FAQs)

Q1: What is the primary function of a relay board in a security setup? A relay board acts as an electrically operated switch. It allows a low-voltage trigger (like a 5V or 12V signal from a biometric reader or alarm panel) to safely switch on a higher-voltage or higher-current device (like a 12V magnetic lock or a 240V siren) without damaging the control hardware.

Q2: Does Biosys Solutions Ltd stock both 4-channel and 8-channel relay boards? Yes, Biosys Solutions Ltd stocks a versatile range of multi-channel relay modules designed to match various commercial and residential automation requirements. Contact our sales desk for specific stock inquiries.

Q3: Are these relay boards compatible with Arduino and standard access control panels? Yes. They feature standard TTL-level trigger inputs, making them fully compatible with microcontrollers (like Arduino and Raspberry Pi), standard alarm control mainframes, and third-party access control power supplies.

Q4: Do these modules include optocoupler protection? Yes, all our standard relay modules feature built-in optocouplers to ensure complete electrical isolation between the control side and the load side, safeguarding your valuable equipment.