5V Temperature Sensitive Relay Module

Automated Temperature-Triggered Switching: Combines an NTC thermistor sensing probe with a high-capacity 5V relay module to enable automated power control based on ambient thermal thresholds.

Adjustable Temperature Sensitivity: Features an onboard precision potentiometer allowing fine-tuned adjustment of the temperature trigger threshold for customized heating or cooling activation.

High-Power Output Control: Heavy-duty relay channels support direct switching of AC load up to 250V / 10A or DC load up to 30V / 10A for fans, heaters, or alarms.

Visual LED Status Indicators: Outfitted with dual onboard LEDs—a red power indicator and a green relay status LED—providing instant visual feedback on operational state and relay coil energization.

Versatile Terminal Connections: Outfitted with screw terminal blocks for Normally Open (NO), Common (COM), and Normally Closed (NC) load wiring alongside 2.54 mm pin headers for DC power input.

Board Material: Flame-retardant FR-4 glass-epoxy PCB with high-current copper traces and blue protective relay casing.

Technical Specifications:

Operating Voltage: 5.0V DC.

Relay Output Rating: AC 250V/ 10A, DC 30V / 10A.

Sensor Type: NTC Thermistor Probe.

Threshold Adjustment: Onboard Multi-Turn Potentiometer.

Board Color: Blue PCB with Black Screw Terminals.

Usage Advice: Ensure input power is strictly regulated to 5V DC; wire load power safely through the COM and NO/NC screw terminals according to high-voltage safety standards.

Maintenance: Keep board surfaces dry and free of conductive debris or metal shavings; ensure adequate air ventilation around high-current output terminals.

Essential Standalone Climate Controller: Position as a complete, standalone thermal control solution that operates independently without requiring microcontrollers or software programming.

Highlight High Load & Adjustable Control: Emphasize how the combination of an adjustable NTC threshold and 10A relay capacity makes it ideal for automated cabinet fans, greenhouse heating, and thermal safety shutoffs.

Recommended Cross-Sell Add-ons: Pair with 3PIN NTC Thermistor Temperature Sensor Module, 4PIN NTC Thermistor Temperature Sensor Module, Analog Temperature Sensor Module, and 10K Precision Metal Head Thermistor - 3950 NTC.

Featured Collection Star: Display prominently on your Thermistors collection page as your primary temperature-triggered switching module.