The PD685 is a low-cost, NEMA 4X, loop-powered indicator that is easy to install and program and can be seen from considerable distance. It will operate over a wide temperature range meaning it can be installed both indoors and out. And the PD685's 1 V drop results in a minimal burden on the loop. Calibration is a quick two-step process involving the adjustment of only two non-interacting potentiometers.
The PD685 is a low-cost, NEMA 4X, loop-powered indicator that is easy to install and program and can be seen from considerable distance. It will operate over a wide temperature range meaning it can be installed both indoors and out. And the PD685's 1 V drop results in a minimal burden on the loop. Calibration is a quick two-step process involving the adjustment of only two non-interacting potentiometers.
