Description
The Honeywell T775U2006 is a universal standalone electronic controller designed for precise control of temperature, pressure, humidity, or any analog variable input. With dual SPDT relay outputs and two analog outputs, it supports both on/off and modulating applications, providing exceptional flexibility for HVAC, agricultural, and industrial systems.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Honeywell |
| Category |
Controls & Indicators |
| Part Number |
T775U2006 |
| Subcategory |
Temperature/Process Control |
| Controller Type |
Standalone Universal Controller |
| Power Supply |
24 VAC @ 10 VA, 120 VAC, 240 VAC (50/60 Hz) |
| Display |
Backlit LCD (2.5 × 1.5 in) configurable °F/°C |
| Inputs |
Analog: 0–10 VDC, 4–20 mA; RTD: Platinum 1 kΩ @ 32 °F (385 curve) |
| Additional Inputs |
Dry contact digital input for night setback or shutdown |
| Control Type |
On/Off, Proportional (PI/PID tunable) |
| Output Type |
2 Analog (0/2–10 VDC or 4–20 mA); 2 SPDT Relays |
| Relay Rating |
10 A @ 24 VAC (resistive); ½ hp @ 120 VAC; 125 VA pilot duty |
| Temperature Range |
–40 °F to 248 °F (–40 °C to 120 °C) |
| Humidity Range |
0–100 % RH (for humidity control) |
| Pressure Range |
–500 to 500 psi / –30 to 30 in W.C. / –3000 to 3000 Pa or kPa |
| Control Algorithm |
PI/PID with adjustable integral and derivative times (0–3600 s) |
| Differential Adjustment |
±1 °F to ±150 °F (±0.5 °C to ±83 °C) |
| Throttling Range |
±1 °F to ±150 °F |
| Clock/Scheduling |
7-day timer with 2 events per day and DST adjust |
| Enclosure |
NEMA 1/4X plenum-rated plastic with hinged cover |
| Mounting |
Surface or DIN rail |
| Approvals |
UL Listed (E4436), CE, C-Tick, FCC |
| Dimensions |
8.2 H × 4.9 W × 3 D in (20.7 × 12.5 × 7.4 cm) |
| Operating Temperature |
–40 °F to 140 °F (–40 °C to 60 °C) |
| Operating Humidity |
5–95 % RH (non-condensing) |
| Color |
Two-tone gray |
| Weight |
2.00 lbs (0.9 kg) |
Information About T775U2006
The T775U2006 is part of Honeywell’s T775 Series of digital standalone controllers, offering advanced configuration and versatile functionality for remote sensing and control. It supports a wide range of input types—including RTD, voltage, and current signals (0/2–10 VDC or 4–20 mA)—and operates on multiple power supplies (24, 120, or 240 VAC). The unit features a backlit LCD interface, menu-driven setup, and non-volatile memory that retains programs through power loss. With a 7-day scheduling clock, configurable PI/PID tuning, and built-in setback options, the T775U2006 provides precise environmental control for complex applications such as cooling towers, boilers, humidifiers, and agricultural ventilation.
Key Features:
- Universal Control Capability: Handles temperature, humidity, or pressure inputs via RTD, voltage, or current sensors for flexible control.
- Dual Analog Outputs: Two independent analog outputs (0/2–10 VDC, 4–20 mA, 135 Ω) for modulating control devices or signal retransmission.
- Dual SPDT Relays: Provides up to 10 A switching at 24 VAC (resistive) or ½ hp at 120 VAC for load control.
- Multi-Power Compatibility: Operates on 24, 120, or 240 VAC, 50/60 Hz without jumpers or power conversion.
- Backlit LCD Interface: 2.5 × 1.5 in digital display configurable in °F or °C with intuitive menu navigation.
- PI/PID Modulating Control: Adjustable proportional, integral, and derivative tuning parameters for precise control response.
- Integrated Time Clock: Seven-day scheduling with two programmable events per day and automatic daylight savings adjustment.
- Non-Volatile Memory: Retains user settings and clock time during power interruptions for up to 24 hours.
- Versatile Mounting Options: Surface or DIN-rail mounting with plenum-rated NEMA 1/4X plastic enclosure and hinged cover.
- Wide Operating Range: Temperature –40 °F to 140 °F (–40 °C to 60 °C); humidity 5–95 % RH non-condensing.
- Fully Certified: UL Listed, CE marked, FCC and C-Tick compliant for global applications.
The T775U2006 offers precise, programmable, and reliable control ideal for commercial HVAC and environmental automation systems.
