Kahan Controls | HVAC - R Controls & Technology

Modular digital controllers available in panel-mount sizes like 32 × 74 mm, supporting both normal‑temperature (NT) and medium/low‑temperature (MT/LT) systems.
Flexible voltage range, from 12–230 Vac/dc, enabling broad compatibility.
Multiple inputs: NTC/PTC probes for box, condenser, defrost; plus configurable digital inputs (door switch, auxiliary, energy-saving modes).
Digital temperature control with multi-stage defrost (electric/hot-gas), fan and compressor staging.
Relay outputs for compressor, defrost (electric or hot-gas), fans, and alarms, rated typically at 8 A up to 20 A for higher-power models.
Defrost management: includes off-cycle or timed/humidity-based defrost, with adjustable parameters for interval, duration, and termination via coil probe.
Ease of programming: intuitive front-panel interface, “Hot‑Key” connector or Prog Tool Kit, ModBUS‑RTU/TTL/RS-485 for remote setup.

Highly versatile: universal voltage, multiple probe types, configurable digital I/O makes them usable across diverse refrigeration setups.
Energy-efficient: features like door-open restart, off-cycle defrost, and fan control enable better energy management.
Robust control: options for dual-temperature, demand defrost, and advanced safety/alarms enhance reliability.
Integrated connectivity: ModBUS/TTL/RS‑485 allows integration into building automation or monitoring systems.
Service-friendly: widespread use and modularity make replacements and technical assistance straightforward.