UL-Listed HALO® combines multiple sensor inputs, including process temperature, limit temperature, and current sensing, to allow monitoring of multiple heaters wired in parallel. Designed for use in remote locations that may pose limited accessibility issues for maintenance personnel, unit also offers Modbus RS-485 communications, DIO, hi/low alarm output, and ramp/soak temperature profiles. Plug-and-play operation is supported with SENTINEL® Gas and Pump Line heaters.