Available as Standard (Limiting Pins) or Tamperproof (Secure Cover)

Product Overview
The DT-350 Zenith is a versatile range of electronic dial thermostats featuring dedicated Night Setback (NSB) logic for energy efficiency. Available in both 230V and 24V options, the range offers flexible security levels for commercial, industrial, and residential projects.

Whether you require the Standard model with user-accessible dials and limiting pins, or the fully Tamperproof model for secure environments, the DT-350 provides precise, managed control.

Technical Features & Benefits

• Energy Saving (NSB): Features a dedicated manual dial to calibrate the Night Setback temperature. When paired with Whisper Controls KF-504 or KF-508 Wiring Centres, this allows for automatic temperature reduction during unoccupied hours, significantly reducing commercial energy costs.
• Two Security Levels:
  • Standard Model: Includes Min/Max Temperature-Limiting Pins behind the dial. Ideally suited for Care Homes where users need some control, but extreme adjustments must be prevented to avoid scalding or freezing.
  • Tamperproof Model: Available in 230V and 24V, featuring a secure cover that completely conceals the set-point dial to prevent unauthorised changes in public or high-traffic areas.
• Advanced Remote Sensing: Compatible with a 4.7kΩ Remote Sensor. Configurable for either remote air temperature sensing (for secure bathrooms/en-suites) or over-temperature safety (floor limiting).
• Instant Diagnostics: Includes a prominent Red LED indicator to confirm active status (Call for Heat), simplifying maintenance and fault finding.

Product Description
The DT-350 Zenith NSB is engineered for facility managers and installers who require a balance between user comfort and building efficiency.

The range distinguishes itself with its Night Setback (NSB) capability, allowing for a pre-set temperature drop during off-hours—essential for meeting modern energy efficiency mandates in commercial buildings.

For Care Home and assisted living applications, the Standard model offers a "middle ground" security solution: users can turn the dial, but the integrated limiting pins restrict the range, preventing accidental high-temperature settings.

For strictly controlled environments like schools or industrial units, the Tamperproof version locks down control entirely. Combined with the ability to accept a remote sensor for air or floor monitoring, the DT-350 is the "universal problem solver" for complex heating contracts.

If you need help finding the right dial thermostat for your project, call our expert team on 01993 640073.