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7semi Dual-Channel Zero-Cross AC Solid-State Relay Module with 5V Control and 240VAC/2A Switching
The 7Semi Dual Channel Solid State Relay Module provides independent contactless control of two AC electrical loads using Panasonic AQG22105 AQ-G solid-state relays. Each channel supports switching up to 2A at 240VAC, making the module suitable for lighting, heaters, appliances, industrial controls, laboratory equipment, and other compatible AC loads. With no mechanical contacts, the module operates silently and eliminates contact bounce and mechanical wear associated with conventional electromechanical relays.
Each AQG22105 uses zero-cross switching, allowing the output to change state near the AC waveform zero crossing to help reduce switching transients and electrical noise. The module operates from a 5V-class control supply and provides individual control inputs, onboard status indication, screw-terminal load connections, and optical isolation between the low-voltage control side and AC switching section. Its compact PCB is suitable for embedded automation, IoT, PLC, and microcontroller-based control systems.
Key Features
- Dual SSR Channels: 2 × independently controlled AC solid-state relay channels
- Panasonic Relays: Uses 2 × AQG22105 AQ-G zero-cross solid-state relays
- AC Load Switching: Each channel supports up to 2A at 240VAC
- Zero-Cross Operation: Switches near the AC waveform zero crossing to reduce switching transients
- Contactless Switching: No mechanical contacts, contact bounce, or relay clicking
- 5V-Class Control: Designed for integration with 5V control systems
- Optical Isolation: Electrical separation between control and AC load sections
- Built-In Snubber: AQG22105 incorporates an internal snubber circuit
- Surge Capability: Each relay supports up to 30A non-repetitive surge current under specified conditions
- Low OFF-State Leakage: Maximum 1.5mA per AQG22105 relay
- Status Indicators: Power and relay-status LEDs
- Independent Inputs: Separate control for both relay channels
- Secure Wiring: Screw-terminal outputs for AC load connections
- Compact Design: 48.0 × 14.0 × 23.56 mm module dimensions
- Broad MCU Integration: Suitable for Arduino, ESP32, STM32, Raspberry Pi, RP2040, PLC, and other controller systems
Applications
- Industrial automation
- Smart home AC switching
- Lighting control
- Heater control
- HVAC systems
- Appliance switching
- PLC output expansion
- IoT-controlled AC equipment
- Laboratory automation
- Embedded control systems
- Industrial machinery
- Building automation
- Remote AC load control
- Frequently switched AC loads
7Semi Dual Channel Solid State Relay
Pinout Reference Guide
7Semi Dual Channel Solid State Relay
Circuit Reference Guide Using 7Semi ESP32 DevKit As Microcontroller
