The 518 automatically detects a single auxiliary sensor to measure either outdoor, floor or remote room temperature. This easy to install thermostat is a direct replacement for tekmar Thermostats 507 and 508. An optional Adaptor Plate 012 is available which allows the thermostat to be installed onto a single gang electrical box. Features Auto Heating Cycle Auxiliary Sensor Input Backlight Freeze Protection Outdoor & Floor Temperature Display Pulse Width Modulation Radiant Floor Heating Technical 518 Installation & Operation 518 Submittal sheet 518 Quick Setup Guide 518 User Manual Product Website Specifications Control Microprocessor control. This is not a safety (limit) control Packaged weight 0.53 lb. (240 g) Dimensions 3-11/16″ H x 3″ W x 15/16″ D (94 x 76 x 24 mm) Enclosure White PVC plastic, NEMA type 1 Approvals Meets Class B: ICES & FCC Part 15 Ambient conditions Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% Non-condensing Power supply 10 to 30 V (ac/dc), 50/60 Hz, 1.8 VA standby, 56 VA max fully loaded, Class 2 Relay 30 V (ac/dc) 2 A, Class 2 circuits Sensor NTC thermistor, 10 kΩ @ 77°F (25°C ±0.2°C) ß=3892 -Included None -Optional tekmar type #: 070, 072, 073, 076, 077, 079, 084 Warranty Limited 3 Year Warranty
