Description
Made for electric baseboard, convector, and radiant ceiling heat, the Honeywell RLV3120A1005 gives simple, set-and-hold comfort with a small digital display and basic push-button control. Its silent TRIAC switching, two-wire line-voltage design, and tight ±0.5°F temperature control make it an easy upgrade over noisy mechanical line-voltage thermostats.
Key Features & Benefits
Digital Non-Programmable Electric Heat Control
Digital, non-programmable thermostat for electric heat only. Compatible with electric baseboards, convectors, and radiant ceilings, not central HVAC.
Silent Triac Switching
Uses electronic TRIAC switching for silent operation with no relay “click,” while holding room temperature to about ±0.5°F of setpoint.
2-Wire Line-Voltage Installation
Simple two-wire, non-polarized connection on 120 or 240 V circuits keeps installs straightforward when replacing older line-voltage thermostats.
Matched To Electric Baseboard Load Range
Rated for resistive loads from 0.83 A up to 8.3 A (roughly 100–1000 W at 120 V or 200–2000 W at 240 V), so it fits typical single line-voltage heater runs.
Not For Fan-Forced Or Central Systems
Specifically excludes fan-forced heaters, systems driven by contactors/relays (inductive loads), and central heating or cooling, reducing misapplication risk.
Compact Digital Display
Small digital screen shows current temperature and setpoint, giving a basic but clear readout at the thermostat.
Hardwired Line-Voltage Power
Powered directly from the 120–240 V line, so there are no batteries to replace.
Key Specs
Application: Digital line-voltage thermostat for electric baseboards, convectors, and radiant ceilings (heat only)
Heating Type: Electric heat only; not for central systems or cooling
Voltage Supply: 120/240 VAC, 60 Hz line voltage
Load Range (Resistive): 0.83–8.3 A (approx. 100–1000 W @ 120 V; 200–2000 W @ 240 V)
Control Type: Electronic TRIAC switching, non-programmable digital thermostat
Wiring / Pole Type: 2-wire, single-pole line-voltage thermostat
Display: Digital LCD (non-backlit per some listings)
Setpoint Range: 40–85°F (5–30°C)
Display Range: 32–99°F (0–50°C)
Operating Temperature: 40–85°F (5–30°C)
Storage Temperature: −4–120°F (−20–50°C)
Dimensions: Approx. 3.25″ × 0.88″ × 4.8″
Safety Listing: UL listed electronic line-voltage thermostat
