T775A/B/M SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
62-0254—13 2
Temperature Sensors
a
The controller accepts 1,097 Ohms PTC at 77°F (25°C):
• 50021579-001 – Standard sensor (included with all 
models except NEMA 4X models)
• T775-SENS-STRAP– Strap on sensor with wiring box
• T775-SENS-WR – Water resistant with 5 foot leads 
(included with NEMA 4X models)
• T775-SENS-WT – Watertight with 6 foot lead
• T775-SENS-OAT – Outdoor air temperature sensor
• C7031B2005 – 6 inch duct mount with wiring box
• C7031D2003 – 5 inch immersion sensor with wiring 
box (use immersion well; P/N 50001774-001)
• C7031J2009 – 12 foot duct averaging sensor with 
wiring box
• C7046D1008 – 8 inch duct probe with mounting flange
• C7100D1001 – 12 inch fast response, duct averaging 
sensor with flange
• C7130B1009 – Room mount sensor
Accessories
• 107324A – Bulb Holder, duct insertion
• 107408 – Heat Conductive Compound, 4 ounce
• 50001774-001 – Immersion Well, stainless steel 304,
1/2 in. threading.
Product Changes
Below are the changes to T775A/B/M models starting with 
Series 3 (March 2009). Series 3 can be identified by the 
sideways 3 after the part number on the device label.
1. Modulating high and low limit now both function in 
either the heat or the cool mode.
2. MIN ON added.
3. SYNC added.
4. Differential and throttling range increased to 300°F.
5. Setpoint and Enable options added to the DI 
options.
6. HIDE option added to MOD1 and MOD2 (to hide 
them on the home screen).
Controller Dimensions
Fig. 1. T775A/B/M Dimensions in inches (mm).
a
See form 62-0265 - Temperature Sensors for the T775 
Series 2000 Stand-alone Controller
4 13/32 (112.1)
1/2 (12.4)
3 31/32 (101)
7 23/32
(196)
8 5/32
(207.1)
2 15/16 (74)
7/8 (22.5)
1 (25.5)
4 1/16 (103.4)
4 1/16 (103.4)
1/64 (3.8)
2 11/16 (68.1)
7/8 (22.5)
2 13/16 (71.8)
7/8 (22.5)
1 (25.5)
7/8 (22.5)
M24279
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