Overview

Every job should be this easy. The 900 series mechanical thermostats are made up of a simple two-piece design, so you save time at installation. The large display offers accurate room temperature measurement. Wall plates are also available to mask any unsightly marks left by previous thermostats. Install it with confidence.

When you select a Robertshaw thermostat, you’ve made the choice of an industry partner that’s been making quality products for 100 years. 

Model HVAC Equipment Type Voltage Battery Prog Events/Day Control Humidity Stages Remote Sensors
984-1R Gas, Electric Mechanical Low n/a n/a n/a Cool Slider n/a Heat: None
Cool: 1
No
986-1R Gas, Electric, Millivolt Mechanical Low n/a n/a n/a Heat Slider n/a Heat: 1
Cool: None
No
988-1R Gas, Electric Mechanical Low n/a n/a n/a Cool Slider, Heat Slider n/a Heat: 1
Cool: 1
No