DS-2C Snow/Rain Sensor Controller


• Automatic Activation means Lower Deicing Costs
• Reliable Rain and Snow Detection
• Full 30A @ 277VAC Control
• Universal 100-277 VAC 50/60 Hz Operation, No Strapping Required
• Replaceable Precipitation Sensor
• Easy Installation, Full Access to Electronics
• 10 Different Functions, 1 Part Number, Simplified Ordering
• Adjustable Delay Off Cycle with 30-90 Min or 2-6 Hr Ranges
• Adjustable Precipitation Sensitivity
• Super Bright Power/Activation LED Indicator
• Selectable Low Temperature Cutoff With Unique "Recover" Mode
• Smart "Manual On" Operates for One Delay Off Cycle
• High Power, Low Price


Dimensions 4"(120) x 7"(178) x 2"(70)
Weight 2 Lbs. (0.9 Kg)
Operating Temperature -40oF to +185oF (-40oC to +85oC)
Enclosure Rating NEMA 3R 
Supply Power 100-277VAC 50/60Hz 15W maximum
Trigger Temperature 34oF-44oF (1.1oC-6.6oC) Field Selectable
Delay Off (Sensor) 2 Minutes
Delay Off (Controller) 30-90 Minutes/2-6 Hours Field Selectable
Load Contact Capacity 30A @ 277 VAC/100,000 operations minimum at full load
Monitor Contact Capacity 24 VDC/VAC 400mA 10W total

The DS-2C is the base model of the DS series. It is primarily designed for automatic control of driveway, sidewalk, and other pavement snow melting applications, satellite antenna/broadcast tower deicing and can be used as a sensor for larger control systems. The unit may also be used as a stand-alone rain sensor/controller for high frequency satellite rain diversion applications and intake air handling. The unit is housed in a two gang PVC enclosure.

The DS-2C can be powered from a 100-277 VAC 50/60 Hz source. Peak power consumption is 15 watts. Input voltage selection is automatic. The unit provides a single 277 VAC @ 30 A normally open load contact set. This contact set is paralleled with a low power contact set to provide remote activation monitoring. Operational temperature range is -40 C to +85 C.

An environmentally sealed control switch is provided. The "Manual On" function activates the controlled equipment for testing and special operational conditions. The "Automatic" position allows the DS-2C to handle all detections and control. The "Standby/Reset" position disables triggering and can also be used to clear the delay off timer from true or test activation. A connection terminal for remote control and monitor at up to 1000 feet away is provided. The DS-2C is compatible with the DP-7B, DP-7EX, and CDP-2 remote control/status panels and can be connected directly to building automation systems.

The DS-2C also has a Super Bright LED indicator, providing a method to check proper power and trigger status when the unit is mounted in a "hard to reach" location. Steady OFF indicates no power to the unit. Steady ON indicates power but no trigger. A blinking LED indicates the DS-2C is triggered and deicing is taking place.


DS-2C Datasheet

DS-2C Installation Manual