The OTH4000P series offers a range of 2-wire line voltage thermostats that provides great energy savings over conventional thermostats. Perfect to control baseboards, radiant ceilings, convectors or fan-forced heaters, these thermostats electronically measure the amount of heat required to maintain room temperature setting precision within +/-0.5 deg C. The digital screen displays room temperature at all time. Programming available for up to 4 periods a day Early start of the heating period Automatic, manual, economy, freeze, standby Temperature setpoints recorded permanently in case of a power outage Ability to set minimum and maximum setpoints