RS PRO temperature controller is a defrost thermostat for use in refrigeration applications. It is compact in size making it easy to install. The temperature controller has NTC sensor input and single output for compressor control.

Options available:
124-1045 - 230V ac, 1 x Relay
124-1046 - 24V ac/dc, 1 x Relay

• 4-digit, LED display
• 35 x 77 mm in size
• On/off control
• Control output for cooling or heating
• Single NTC probe input
• Operating range -60 ˚C to 150˚C
• Defrost function
• Compressor protection settings
• Probe failure setting, output status can be set to On, Off or Pulse
• Sensor input offset setting
• “Smart defrost” feature
• Adjustable defrost duration and intervals
• 6 Selectable warning tones
• High and low alarm limits, absolute or deviation
• Temperature units ˚C or ˚F
• Digital input; External alarm, initiate defrost
• Optional key flash programming, real-time clock or RS485
• Transfer device parameter settings with key flash programming device
• CE Certified

On/Off temperature controllers are designed to control and maintain temperatures in appliances by turning on or off, depending on the users required pre-set temperature. If the temperature drops below the setpoint, the controller will turn on and increase the temperature until it is met. Once the desired temperature is reached, the device output switches off automatically. Temperature controllers are perfect for applications that require temperature control solutions, especially those whereby the temperature increases slowly, and are commonly used in areas such as:

HVAC systems
Ovens
Incubators
Automotive
Storage solutions

FAQs

Why use an On/Off Temperature Controller?
Used for monitoring purposes in heating environments, on-off temperature controllers prevent rapid increases in temperature that could cause damage. These controllers are often used where there isn't a need for precision temperature control, but where a system is unable to handle continuous interruptions. A typical example of an on-off controller is a thermostat in a system, if the temperature drops below the preset level the system is switched on. They can protect against a system over-heating or over-cooling and have an 'on' 'off' option with no middle state.

Why RS PRO?
RS PRO is our family brand and brings you a wide range of high-quality and high-value products to support your project. Trusted by engineers all over the world, every part of every RS PRO product is always rigorously tested against demanding industry standards. We are only giving the RS PRO seal of approval if we're confident of their exceptional quality, which means you can be convinced too.

Regulate heat levels simply and precisely with this on/off thermostat controller from RS PRO. You can use it to set the temperature you need and it will turn off the output once the level has been exceeded. Once the temperature has dipped below the preset level, the controller will switch back on again.


This controller is small in size and can be panel-mounted easily in compact spaces. Its NTC (negative temperature coefficient) sensor input assures you accurate and reliable readings. There are two outputs for compressor, fan and defrost control, giving you flexible application options.


You can use this versatile component to adjust the time and intervals of defrosting as well as to set alarm limits. It's also possible to program upper and lower setpoint value limits using this device. Temperature controllers such as this one are typically found in a broad range of refrigeration applications.