Q: What is the difference between the HSC-4 and the HSC-5?
A: Hold on time, the HSC-4 has a 1 hour hold on time while the HSC-5 has a 5 hour hold on time.
|ETI SIT-6E Pavement Mounted Snow & Ice Sensor used with any APS series or EUR–5A Control Panel|
|both controller and sensor:
||ETI HSC-4 & HSC-5 Pavement Mount Snow Melt Control. Automatic Deicing Control Saves Energy|