The Temperature Sensitive Relay Module 5V is a compact and reliable module designed to automatically control electrical loads based on temperature. With its built-in thermistor sensor and adjustable set-point, this relay module can switch ON or OFF devices like fans, heaters, exhaust systems, or other appliances without requiring a microcontroller.

Perfect for greenhouses, aquariums, DIY Arduino projects, and home automation systems in Bangladesh, this 5V relay module is easy to use—just connect power, adjust the potentiometer, and let it handle the rest.

If you are searching for a low-cost temperature control relay module in BD, this is one of the most popular choices for students, hobbyists, and electronics professionals.

Features:

• Built-in thermistor temperature sensor for automatic switching

• Adjustable temperature trip-point using onboard potentiometer

• Controls AC loads up to 250V @ 10A and DC loads up to 15V @ 10A

• LED indicator shows when the relay is energized

• Operates with 5V power supply

• Supports NO (Normally Open) and NC (Normally Closed) output options

• Reliable LM393 comparator IC for precise switching

• Compact size with M3 mounting holes for easy installation

Specifications:

• Operating Voltage (Vcc): 5V DC

• Relay Contact Rating:

  • DC: up to 15V @ 10A (recommended max 15V)

  • AC: 115V AC @ 10A / 250V AC @ 10A

• Current Consumption: ~80mA (relay energized)

• Output Type: SPDT (NO / NC / COM terminals)

• PCB Dimensions: 50 × 27 × 18mm

• Mounting Hole Size: M3, 44.5 × 20.5mm pattern

• Country of Origin: China

Applications:

• Greenhouse automation – auto fan control when temperature rises

• Aquarium temperature regulation

• Exhaust fan control in rooms or cabinets

• Heater activation when temperature drops

• DIY Arduino and microcontroller projects

• Home and industrial automation systems