Cadet Single Pole Line Voltage Thermostat for Baseboard & Wall Heaters

Price: $21.48 - $23.10
(as of Oct 15, 2026 23:07:18 UTC – Details)


The Cadet T521-W Single Pole Wall Thermostat gives you simple, reliable line voltage control for your electric heating. It works with 120, 208, and 240 volt electric baseboard heaters, fan-forced wall heaters, and convectors, and the single pole, 2-wire design handles up to 5,280 watts at 240 volts or 2,640 watts at 120 volts, making it a versatile match for most line voltage heating circuits. Rated for 22 amps, it uses a proven bimetal mechanism for dependable, maintenance-free operation with no batteries and no programming required. A straightforward twist of the dial sets your comfort level, raising or lowering the temperature so the thermostat can cycle the heater to hold a steady, comfortable room. Because it is designed to replace most wall-mounted line voltage thermostats, the T521-W is an easy upgrade for an old or failing control, and its simple two-wire, single pole hookup with color-coded wires makes the connection quick and clear. Many homeowners can install it themselves, though we always recommend following local electrical code and consulting a qualified electrician when in doubt. The clean white, non-programmable design mounts in a standard wall electrical box and blends into any room, making it a practical fit for homes, apartments, offices, and workshops. In the box: (1) single pole line voltage wall thermostat with color-coded lead wires and mounting hardware.
CONTROLS ELECTRIC HEATERS – Line voltage thermostat for 120, 208, and 240 volt electric baseboard, fan-forced wall, and convector heaters; the single pole, 2-wire design handles up to 5,280 watts at 240 volts or 2,640 watts at 120 volts
EASY 2-WIRE INSTALL – Designed to replace most wall-mounted line voltage thermostats, the simple single pole, two-wire hookup with color-coded wires makes installation fast, so you can swap out an old or failing thermostat yourself without hiring a contractor
SIMPLE TWIST-DIAL CONTROL – Dial in your preferred comfort level with one easy turn, raising or lowering the temperature to keep the room as warm as you like; the responsive bimetal sensor cycles the heater to hold a steady, comfortable setting
RELIABLE MECHANICAL DESIGN – A proven bimetal mechanism delivers dependable, maintenance-free operation with no batteries, no programming, and nothing to set up; just mount it, set the dial, and let it manage your heating
RATED FOR 22 AMPS – Handles up to 22 amps for line voltage heating circuits and installs in a standard wall electrical box; the clean white, non-programmable design blends into any room and suits homes, apartments, offices, and workshops
Customers find the thermostat simple to install, easy to replace, and appreciate its nice appearance. Moreover, they consider it good value for money, and one customer mentions it successfully heated their house to 72 degrees when set to that temperature. However, the quality control receives mixed feedback, with some customers describing it as great while others consider it junk.