Emerson Mercury Free Mechanical Thermostat

The Emerson 1E30N-910 is an easy-to-operate low voltage mechanical thermostat. This thermostat is compatible with heat only systems, millivolt systems and conventional oil/electric/gas systems. This thermostat features a 50 degree F - 90 degree F operating range.|Replaces most mechanical heat only thermostats made in the last 50 years|Includes wallplate to cover marks left by old thermostat|Single stage heat (1H)|Control range - 50 degree F to 90 degree F|Terminals RH, W|No system or fan switch