Intermatic - FF4H - Spring Wound Countdown Timer, Commercial, Silver VBJMBB When using the HRC 990

When using the HRC 990 the keyed plug can only be installed one way

trouble-free performance – even in harsh reclaimed water applications

Preassembled units save the contractor time and reduce installation costs

No pump or outside power source is required

Monitors water temperature for solar heating/cooling

Intermatic - FF4H - Spring Wound Countdown Timer, Commercial, Silver VBJMBB When using the HRC 990Spec Sheet Install Manual Intermatic FF4H Spring Wound Countdown Timer, Commercial, 125 277 VAC, 50 60 Hz, SPST, 4 Hour Max, Without Hold, Silver The FF Series Commercial Countdown Timers are designed to replace any standard wall switch and do not require electricity to operate. These energy efficient switches automatically limit the ON times for fans, lighting, motors, heaters, and other energy consuming loads. A commercial "brushed metal" look plate