Wall Heater by Convectair- Allegro 14 II Heater - 1000W Natural Convection Silent and precision comfort with the latest safety features. Smoother grill and lockable, thermal-protected thermostat. Quiet when in use, as there is no fan necessary. Cast aluminum heating element heats cool air that is pulled in from below, rather than creating it with a fan All Allegro II models are compatible with these Convectair programmers: 7392-FP, 7392-ECP, 7392-RCP and Z000-900-02.