MP - Differential Pressure Switch / Lube Oil Protection Switch
MP 54 and MP 55 oil differential pressure switches are used to protect refrigeration compressors against low oil pressure. These switches are
compatible with HCFC and non-flammable HFC refrigerants.

MP - Differential Pressure Switch / Lube Oil Protection Switch
MP 54 and MP 55 oil differential pressure switches are used to protect refrigeration compressors against low oil pressure. These switches are
compatible with HCFC and non-flammable HFC refrigerants.

MP - Differential Pressure Switch / Lube Oil Protection Switch
MP 54 and MP 55 oil differential pressure switches are used to protect refrigeration compressors against low oil pressure. These switches are
compatible with HCFC and non-flammable HFC refrigerants.

KPU - Pressure Switches
KPU pressure switches are designed to be contractor friendly and used in refrigeration and air-conditioning systems to protect the systems
from excessively low suction or high discharge pressure. They can also be applied to start and stop compressors and the fans of air-cooled
condensers. KPU pressure switches, in single and dual versions, cover a comprehensive range of applications and are designed for use with
Fluorinated and non-aggressive refrigerants. Most KPU pressure controls can be used with R-410a systems with only a few code numbers.

KPU - Pressure Switches
KPU pressure switches are designed to be contractor friendly and used in refrigeration and air-conditioning systems to protect the systems
from excessively low suction or high discharge pressure. They can also be applied to start and stop compressors and the fans of air-cooled
condensers. KPU pressure switches, in single and dual versions, cover a comprehensive range of applications and are designed for use with
Fluorinated and non-aggressive refrigerants. Most KPU pressure controls can be used with R-410a systems with only a few code numbers.

KPU - Pressure Switches
KPU pressure switches are designed to be contractor friendly and used in refrigeration and air-conditioning systems to protect the systems
from excessively low suction or high discharge pressure. They can also be applied to start and stop compressors and the fans of air-cooled
condensers. KPU pressure switches, in single and dual versions, cover a comprehensive range of applications and are designed for use with
Fluorinated and non-aggressive refrigerants. Most KPU pressure controls can be used with R-410a systems with only a few code numbers.

KPU 19 - Thermostats
The KPU 19 thermostats are designed for easy installation and service with bottom and rear knockouts, differential adjustment dial,
a tamper-resistant design, and a robust thermoplastic housing.

KPU 19 - Thermostats
The KPU 19 thermostats are designed for easy installation and service with bottom and rear knockouts, differential adjustment dial,
a tamper-resistant design, and a robust thermoplastic housing.

KPU 19 - Thermostats
The KPU 19 thermostats are designed for easy installation and service with bottom and rear knockouts, differential adjustment dial,
a tamper-resistant design, and a robust thermoplastic housing.

Features
Features A421 Standard model
Control Front Panel LCD:
Displays the temperature, parameters, and status and allows you to adjust the backlight intensity for ambient light conditions. Custom icons display the system and control status.
Basic and Advanced Programming Menu:
Provides two levels of parameter adjustment and control setup, allowing you to set up advanced features in one menu and easily adjust basic parameters in the other menu.
On/Off Temperature Adjustment:
Allows you to select the temperature values at which the relay turns On and Off, which automatically defines the Heating or Cooling mode of operation.
Switch-Activated Temperature Setback:
Allows you to shift the On/Off temperature by an adjustable setback value. When a user-supplied switch closes the binary input control circuit, the control operates at the defined setback temperatures.
Adjustable Anti-Short Cycle Delay:
Allows you to select the minimum time the output relay remains off before the next on cycle; avoiding short cycling, hard starts, and nuisance overload outages on compressors and other inductive applications.
Adjustable Sensor Offset:
Allows you to adjust the displayed temperature to the actual sensed temperature.
Optional Restricted Adjustment Mode:
Allows you to restrict the On/Off adjustment to your defined temperature range.
Sensor Failure Mode:
Allows you to select the relay On/Off state in the event of a sensor or sensor wire failure.
Backlight Brightness Level:
Allows you to adjust the LCD backlight intensity.
Extra Features A421 Defrost model
Off-Cycle Defrost:
Allows you to shut off the refrigeration system for defined defrost time interval and frequency. You can also start or stop a manual only defrost offcycle.
Extra Features A421 Timer model
Free-Cooling and Ventilation:
Allows you to adjust for free-cooling and timed-ventilation, and provides over-cooling protection.

The ETC-1122 Green Discharge Temperature Sensor is designed for accurate temperature measurement and control, offering high reliability and precision. Equivalent to Emerson / Copeland / CPC part numbers 501-1121 & 501-1122 and Parker, Micro Thermo Technologies™ part number 023-0073..

The ETC-1125 Blue Temperature Sensor is designed for precise coil inlet temperature monitoring in evaporators. Compatible with Emerson / Copeland / CPC part number 501-1125 and Parker part number 023-0076. Identical to the Emerson / Copeland / CPC part number 501-1125 and Parker / Micro Thermo Technologies™ part number 023-0076.