070 Tekmar Outdoor Sensor
Outdoor Sensor * Outdoor air sensor for Tekmar controls. 10K @ 77F.
13 In Stock
071 Tekmar Universal Sensor
Universal Sensor Type 2 Universal sensor for Tekmar controllers.No enclosure. 10 inch leads. 10K @ 77F.
18 In Stock
076 Tekmar Indoor Sensor
Indoor Sensor * Indoor sensor for Tekmar controllers. Non adjustable. 10K @ 77F
6 In Stock
078 Tekmar SENSOR W/15'JACKETED CABLE
SENSOR W/15'JACKETED CABLE
Not in stock
256 Tekmar 1 Stage Boiler Reset Control
1 Stage Boiler Reset Control * 1 Stage boiler reset control. 24V. LCD display. Warm WX shutdown, setback, max/min temps. O/A & boiler sensor are included. Optional room sensor.
15 In Stock
261 Tekmar 2 Stage Boiler Controller
2 Stage Boiler Controller * 2 stage boiler reset with pump output. 120V. Stages can be alternated for equal run time. Optional night setback.Min/Max temp.
2 In Stock
274 Tekmar Dig. 4 Stg Boiler Reset w/Sens
Dig. 4 Stg Boiler Reset w/Sens **DISCONTINUED REPLCD W/ 294 TEKMAR
2 In Stock
A350RS-1C Johnson Sys 350 Reset Temp Cntrl
Sys 350 Reset Temp Cntrl * System 350 Boiler Reset Control. 24V. Ratio 1:5-3:1. Minimum Supply 50-160 Max Supply 160-220F. Diff 1-30. Warm Weather Off Rating 4Amp. Up To 9 Stages Avail With S350 Modules.
7 In Stock
C450RBN-3C Johnson Reset Control Mod 1 StagTem
Reset Control Mod 1 StagTem * Reset Control Module with LCD, Four-Button Touchpad UI, and SPDT relay output. 24 volts. REPLACES: C450RBC-1C
3 In Stock
C450RCN-3C Johnson Controls Reset Control Module with LCD,
Reset Control Module with LCD, Four-Button Touchpad UI, and SPDT relay output; provides two SPDT output relays. One A99BC-25C temperature sensor with 0.25 m (9-1/4 in.) silicon leads and one A99BC-300C temperature sensor with 3 m (9 ft 10 in.) silicon leads are included in the box with the Reset Control Module.
1 In Stock
T775L2007 Honeywell Electronic temperature reset or
Electronic temperature reset or sequence control. 24/120/240 volts. Up to 2 inputs and 4 SPDT outputs. Stages multiple relay from 2 independent heat or cool set points. 9.8/4.9 Amps @ 120/240V. 8VA consumption. Built-in 7 day timeclock allows 2 event
22 In Stock
T775P2003 Honeywell Boiler Reset 4 Stage w/ Pump
Boiler Reset 4 Stage w/ Pump Expandable reset control with optional pump and lead lag control. 24/120/240 volts. Range -40 to 248F. 3 sensors included, 4 stages. 1 DI for disable or setback. 1 DO for alarm. Last stage can be used for pump control. Can be expanded to up to 12 stages with T775S2008
19 In Stock