The Espar Heater Systems Digi-Max D1000 works with the Airtronic D2/D4 bunk heaters.
The Digi-Max D1000 controller includes a constant heater status display, a temperature set point with Celsius and Fahrenheit options, a runtime count-down clock, fault code messages, a programmable low voltage shut-off, maximum run time limiter and customized p.m. schedule alerts.
Espar Heater Systems
(800) 387-4800