Description
Product Description
The 4-Channel Solid State Relay Module (AC to DC Control) is a versatile and intelligent switching interface designed to safely control DC-powered devices and systems using AC mains voltage as the control signal. This innovative module allows you to use standard wall switches, door sensors, or other 100-240V AC signals to trigger low-voltage DC circuits, bridging the gap between high-voltage AC control systems and modern DC-powered applications. With an exceptionally wide 3-24V DC output range and selectable high/low-level trigger logic, it provides unparalleled compatibility for powering motors, LEDs, solenoids, and other DC loads directly from AC control sources.
Featuring advanced optocoupler isolation on all four independent channels, this module ensures complete electrical separation between the AC control side and DC load side, protecting sensitive DC electronics from AC line noise and voltage spikes. The solid-state design provides silent operation, fast switching speeds, and exceptional reliability with no moving parts to wear out. Whether you’re upgrading traditional AC control systems to interface with DC equipment, building automation systems that require mixed voltage operation, or creating safety interlock circuits, this module offers the perfect solution for reliable, isolated control between AC and DC domains.
Key Features
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Bi-Directional Voltage Control: Use standard 100-240V AC signals to control 3-24V DC loads, creating seamless interfaces between AC control systems and modern DC equipment.
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Wide DC Output Range: Supports 3-24V DC loads with automatic voltage detection, eliminating the need for multiple relay types for different DC voltages.
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Dual Trigger Mode Selectable: Configure each channel individually for high-level or low-level trigger operation via convenient onboard jumpers for maximum application flexibility.
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Full Optical Isolation: Advanced 2500Vrms optocoupler isolation on all channels protects DC electronics from AC line transients, noise, and potential ground loops.
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Four Independent Channels: Control up to four separate DC circuits or devices from a single compact module, with individual status indicators for each channel.
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Solid-State Reliability: No moving parts ensures silent operation, fast switching, and exceptional lifespan compared to mechanical relays.
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Zero Voltage Crossing: Integrated zero-crossing detection minimizes inrush current and electromagnetic interference for cleaner switching of DC loads.
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Universal AC Input Compatibility: Works with worldwide AC voltages from 100V to 240V AC at 50/60Hz, making it suitable for international applications.
Main Parameters
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Control Input Voltage: 100-240V AC, 50/60Hz
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Load Output Voltage: 3-24V DC (Wide Range, Auto-detecting)
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Maximum Load Current: 2A per channel
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Channels: 4 independent channels
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Trigger Logic: High-Level or Low-Level (jumper selectable)
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Isolation Voltage: 2500V RMS
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Switching Type: Zero-crossing solid state
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On-state Voltage Drop: < 1.5V DC
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Dimensions: Approximately 105mm x 85mm x 28mm
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