The 4700 Series is designed to detect the condition of the steam trap (cold, ok, and blow thru) for any make or model of steam trap. The 4700 Series utilizes acoustic and temperature readings coupled with Armstrong patented logic to determine the condition of the steam trap. The easy-to-install design provides non-intrusive installation that can be completed in minutes without any special tools. The transmitter is battery powered and can be changed easily and quickly without removing the transmitter from the mounting hardware. The 4700 series includes a pressure switch option for modulating applications.