The DT92 family is a range of wireless digital room thermostats designed to provide comfort and economy in modern heating systems. It features energy-saving TPI control performance, an ECO button for energy efficiency, and a modern slim design with a simple user interface.
The Honeywell DT92 is a battery‑powered wireless digital room thermostat with a 230 V mains‑powered relay box. It communicates via 2‑way RF at 868 MHz and offers features such as self‑learning TPI control, an ECO energy‑saving button, and frost protection.
The manual provides detailed instructions for installation, wiring, parameter configuration (Installer Mode), and troubleshooting, as well as full technical specifications and safety information.
| Power supply (thermostat) | 2 × 1.5 V AA alkaline cells |
|---|---|
| Temperature setting range | 5 °C to 35 °C (0.5 °C increments) |
| Battery life | Minimum 2 years (up to 4 years with correct cells) |
| Relay box power supply | 230 V, 50‑60 Hz, 1 VA max |
| Cycle rate (relay box) | Adjustable 3, 6, 9, 12 cycles per hour |
| Temperature accuracy | ±0.5 °C at 20 °C, 50 % load |
| Relay life | ≥ 100 000 operations |
| Dimensions (thermostat) | 90 × 92 × 27 mm |
| IP rating | IP30 |
| RF communication band | 868 MHz ISM band, 1 % duty cycle |
It switches the thermostat to a lower, energy‑saving setpoint for a user‑selected period (1‑24 hours) and displays a countdown of the remaining time.