Relay Control PCBA For Load Switching In Smart Home Automation Systems

This 190 × 65 mm relay-based PCBA uses a mix of SMT and through-hole components. It is built for projects that need discrete on/off control of local loads rather than complex data processing. Multiple onboard relays connect to external wiring through plug-in terminal blocks and switch power to connected hardware when they receive trigger signals. Ningbo MingXi builds it as a PCB assembly exporter from China, with prototype and volume production.

Key Functions

• Multiple onboard relays: discrete on/off switching for local loads.
• Trigger-signal operation: the input trigger signal switches power to the connected hardware.
• Plug-in terminal blocks: connect external wiring without on-site soldering.
• Power section smoothing: electrolytic capacitors and inductors smooth input voltage fluctuations, which matters for equipment that cycles on and off often in field installations.
• Mixed SMT and through-hole assembly on a 190 × 65 mm board.

Applications

• Ventilation fan assemblies
• Electromagnetic lock access units
• Auxiliary control modules for rolling shutter systems
• Small motors and lighting loads, where a relay design suits the inrush currents they produce

For smart switch and automation modules, see our relay control PCBA for smart switch and automation projects.

One-Stop Service and Customization

We can revise the board outline, relay quantity, and connector pinouts to match your enclosure dimensions. Most changes come from a new mechanical housing or a different target load rating. We support prototype batches for lab validation and volume manufacturing runs. We test every assembled unit for continuity on the relay channels and perform visual solder inspection before shipment.

What to Send for a Quotation

• Loads to be switched and their ratings
• Number of relay channels
• Input trigger signal type and supply voltage
• Enclosure dimensions and connector or pinout requirements
• Prototype or volume quantity

FAQs

Can you change the relay quantity and connector pinouts?

Yes. We can revise the board outline, relay quantity, and connector pinouts to match your enclosure and load requirements.

What kinds of loads can it switch?

It has been integrated into ventilation fan assemblies, electromagnetic lock units, and rolling shutter auxiliary modules, and it suits small motors and lighting loads.

Does the board process data or run complex logic?

No. It is built for discrete on/off control of local loads, triggered by external input signals, rather than for complex data processing.

How is each board tested?

We check every assembled unit with continuity testing on the relay channels and a visual solder inspection before shipment.

Request a quote for your relay control PCBA for load switching.