4 Channel Solid State Relay Module

The 4 Channel Solid State Relay Module lets a microcontroller such as an Arduino, ESP32 or Raspberry Pi switch four separate mains loads with low-voltage control signals. Each channel uses a solid-state relay (SSR) instead of a mechanical contact, so it switches silently, has no contacts to wear out and suits loads that are turned on and off often, such as lamps, heaters and fans in home automation projects.

4 Channel Solid State Relay Module Specifications

• Channels: 4, each with its own control input
• Relay type: solid-state relay (SSR), no moving parts
• Module supply: 5 V DC
• Control: logic-level signal from a microcontroller pin
• Isolation: control side and load side are separated inside each SSR
• Load: within the voltage and current printed on the relays
• Operation: silent, no clicking

4 Channel Solid State Relay Module Applications

• Home automation: lights, fans and sockets controlled by Arduino or ESP32
• Heater and thermostat control
• Timers and light-sensor switching for lamps
• Greenhouse and aquarium controllers with several outputs
• Projects that switch loads many times a day

What's in the Box

• 1 × 4-channel solid state relay module

Tip: SSR modules of this type are usually made for AC loads and may not turn off a DC load, so check the rating printed on each relay and stay well below it. Check whether the inputs are active low or active high before writing your code, wire the load side only with the mains switched off, and keep it in a closed enclosure.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.