Chemelex E109R Thermostat

Chemelex E109R Thermostat is a line-voltage control device that directly switches electric heating elements. Verified specifications show a temperature setpoint range of 30°F to 230°F and a 277V-AC rating, confirming it operates on high-voltage power without a transformer. The unit is identified as model E109R from Chemelex, and retailer listings corroborate the 30–230°F range and 277V-AC compatibility, aligning with Chemelex's line of high-voltage thermostats for electrical heating applications. This single-point on/off control is designed to regulate temperature in 277V systems without external conversion, making it suitable for installations that require straightforward temperature control within this range. Verified by multiple listings, including Zoro and NRIParts, the E109R designation and rating ensure consistency with other Chemelex thermostats in the same family.