Description
The 1-Channel Capacitive Touch Relay Switch Module is a standalone touch-activated relay board designed to replace mechanical switches with a contactless interface. It combines a capacitive touch sensing IC, a low-power control circuit, and an electromagnetic relay on a single PCB. When a finger touches the sensing area, the relay toggles between ON and OFF states (in self-locking mode), allowing direct control of loads such as lamps, fans, and small appliances without a microcontroller.
The module operates from 5V, 12V, or 24V DC (selectable variant) and features an ultra-low-power sleep mode: when no touch is detected for approximately 12 seconds, the module automatically switches to a low-current state to conserve energy . The sensing area can be mounted behind non-metallic materials such as plastic, glass, or thin paper, making it suitable for hidden wall switches and modern panel designs . Indicator LEDs provide visual feedback: a red power LED and a green touch-status LED .
Critical limitations: This is a budget-tier module with no calibration certificate. The relay provides on/off switching only, not proportional control. The output mode is typically self-locking (toggle)—touch once to turn on, touch again to turn off . Some variants may support momentary mode via solder jumpers, but this must be verified. The sensing area is on the PCB; metal objects near the sensor can cause false triggers.
Features
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Capacitive Touch Control: Contactless switching with no mechanical wear .
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Self-Locking (Toggle) Operation: Touch once to activate the relay, touch again to deactivate .
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Low-Power Sleep Mode: Enters low-current state after ~12 seconds without touch, wakes on touch .
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5V/12V/24V Selectable Variants: Matches different DC power supply architectures .
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Isolated Relay Output: Dry contacts for direct load control .
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Touch-Through-Panel Capable: Mount behind plastic, glass, or thin non-metallic materials .
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Indicator LEDs: Red power LED, green touch-status LED .
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Compact PCB with Mounting Holes: Approximately 50×26mm with M2 screw holes .
Technical Specifications
| Parameter | Specification (per most detailed supplier data) |
|---|---|
| Touch Type | Capacitive, self-locking (toggle) |
| Operating Voltage | 5V / 12V / 24V DC (variant-dependent) |
| Quiescent Current (5V) | 2.5mA (sleep mode) |
| Working Current (5V) | 60mA (relay energized) |
| Relay Contact Rating | 10A @ 250V AC / 30V DC |
| Sleep Mode Trigger | ~12 seconds without touch |
| PCB Dimensions | Approx. 50 × 26mm |
| Mounting | M2 screw holes (3mm) |
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