TWO RELAY CONTROL MODULE
The 127402 is a Two Relay Control Module with 2 SPDT Outputs. The 127402 uses ambient air and grease filter measurements to control two single-stage compressor systems or an A/C unit and can be used for heat pump applications.
The Johnson Controls 127402 relay control module provides thermostat control for both heating and cooling. It has one full-range temperature control to maintain desired temperature, and it can be set with a temperature differential switch position to provide off/fan/temperature control operation. This module has two SPDT relays that are used for independently controlling HVAC shut off or initiation of external outputs, shut off water supply for backflow prevention, etc.
Relay control modules connect to a variety of field devices and can be used with a wide variety of electronic components to provide output control and monitoring. The A90G51H2K is for two output SPDT relays. A positive or negative SPST signal applied to the Start input sets the logic state on all outputs, and a positive or negative SPST signal applied to the Stop input resets all outputs. The Hold input causes all outputs to maintain their last logic state until the next Start or Stop is applied.
A Johnson controls 127402 Johnson-40-150F temp control with 2-SPDT output relay module. The packing list reads: JC127402A; -40 to 150F; 125V, SPDT. Dimmensions: 5"x3.75"x1" (L/W/H). I cannot locate a unit like this anywhere on the internet. The only thing I can find is a Johnson C127402B.
The Johnson Controls 127402 Johnson -40-150F temp control with 2-SPDT output relay module is used for either heating or cooling processes. It delivers only the right amount of power to the process, which translates to savings on energy costs. The module helps to control temperature by sending one signal to normally open contacts, and sending a separate signal to normally closed contacts. With 5 Vdc coils, this module is intended for indoor use and comes fully wired and ready for quick and easy installation.
The Johnson Controls 127402 Johnson -40-150F temp control with 2-SPDT output relay module can be used for separate cooling and heating applications. For air conditioning applications, the Johnson Controls 127402 is designed to sense ambient temperature and activate a hvac device. The Johnson Controls 127402 features an output of 99 ma at 12 volts DC. The rugged design is long lasting and operates over a -40 to 150 F temperature range.
The Johnson Controls 127402 Johnson -40-150F temp control with 2-SPDT output relays from Industrial Revolution provides a reliable solution for controlling applications from a remote location. Designed for use with thermostatic devices and one or two stage valves, the 127402 comes with (2) SPDT relays and is capable of switching 120/240VAC at up to 300/400VAC. The output voltage can be set between 24-0VDC.
Johnson Controls 127402 Johnson -40-150F temp control with 2-SPDT output relay. Power Cord included.
The 40-150F temperature control module is a plug-in type temperature control, complete with a nylon cover for protection from the environment. The Johnson Controls 2 SPDT relay output module has an alarm that sounds when an alarm condition exists, and is designed to work with other Johnson Controls building systems components.
The Johnson Controls 127402 -40-150F temp control with 2 SPDT output module provides ice machine, food preparation equipment, and ventilation systems with a way to automatically control duct fan capacity. It's got a 24VAC input power supply of 10A max, and is suitable for either open or closed loop applications.
The ability to control two devices with a single relay.
The -40 to 150-Volt, 120/240/208/277-Volt, 2 Output Screw Terminal Resistor Thermostat with built-in SPDT relay contactor control can be used for temperature control of air conditioner compressors, temperature of a heating system, etc.