Watts Tekmar WiFi Snow Melting Control 670

WiFi Snow Melting Control 670

The WiFi Snow Melting Control 670 is designed to manage both hydronic and electric heating systems, facilitating the melting of snow and ice from road and walkway surfaces. It seamlessly interfaces with the tekmar Snow/Ice Sensor 090 or the Snow Sensor 095 for automatic snow and ice detection, ensuring efficient operation. The control can operate a single boiler, steam valve, or electric cable to supply heat to the slab.

Key Features:

  • Mobile app compatibility for iOS and Android platforms, enabling remote control via the Watts® Home mobile app.
  • Automatic software updates ensure the control stays up-to-date with the latest features and enhancements.
  • Supports automatic snow/ice detection with compatibility for both in-slab and retrofit aerial sensors.
  • Multiple zones with priority support, ensuring efficient heating in designated areas.
  • Idling feature for optimized system performance during standby periods.
  • Auto storm and warm weather shut down functions enhance system efficiency and protect against unnecessary operation.
  • Cold weather cut-out feature prevents damage to the system during extreme temperatures.
  • EconoMelt functionality helps manage energy usage for cost-effective operation.
  • Slab protection ensures durability and longevity of the heating system.
  • Tandem snow/ice detection feature improves accuracy and reliability of snow detection.
  • Equipment exercising capabilities help maintain system health and functionality over time.


Agency Approvals CSA C US, meets Class B: ICES & FCC Part 15
Ambient Conditions -4 to 122 degree F (-20 to 50 degree C), less than 90 percent RH non-condensing, outdoor use permitted when installed inside an NEMA 3 enclosure
Analog Mixing Output 0-10 V (dc) 500 ohms min impedance / 4-20 mA 1 k ohms max impedance
Boiler Modulation Output 0-10 V (dc) 500 ohms min impedance / 4-20 mA 1 k ohms max impedance
Communications Type WiFi 802.11n, 2.4 GHz, WPA2 encryption
Control Type Microprocessor control. This is not a safety (limit) control
Dimensions 6-5/8″ H x 7-9/16″ W x 2-13/16″ D (170 x 193 x 72 mm)
Display 3.5″ color touchscreen
Enclosure Material Blue PVC plastic
Enclosure NEMA Rating NEMA 1
Floating Mixing Output 230 V (ac), 5 A
Injection Mixing Output 230 V (ac), 2.4 A, 1/6 hp, fuse T2.5 A 250V
Manual Melt Call Short or 0 – 32 V(ac)
Power Supply 115 V (ac)plus / minus 10 percent, 60 Hz, 20 VA
Relay 230 V (ac), 5 A, 1/3 hp
Sensor NTC thermistor, 10 k ohms at 77 degree F (25 degree Cplus / minus 0.2 degree C) Beta =3892