The Honeywell 05701-A-0502 is the controller part of a larger System 57 digital control system.

Product Name:

Honeywell 05701-A-0502 controller

Product Description:

A multifunctional device designed to control a variety of systems, including HVAC (heating ventilation air conditioning) and industrial control systems.
Provides a Modbus communication interface that allows the controller to communicate with external devices and computer systems. Modbus is a common industry standard protocol for transferring data between electronic devices.

Product parameters:

Input voltage :24VAC
Input frequency :50/60Hz