The Space Age W3-SEN-HTD is the Ramtech WES3 wireless heat sensor — a battery-powered fixed-temperature detector for temporary fire detection on North American construction sites and similar non-permanent installations. First, the thermistor monitors ambient temperature. Then, at 135°F, it triggers the WES3 mesh network. As a result, the site-wide system raises an evacuation alarm within seconds, without any panel wiring.
What W3-SEN-HTD is built for
Traditional smoke detection struggles in kitchens, welfare cabins, dust-heavy areas, and zones with steam or high humidity. However, fixed-temperature heat detection works reliably in those environments. Therefore, the WES3 heat sensor is the standard WES3 device for back-of-house, mechanical, and trade-fitout areas where smoke detection would generate nuisance alarms. In addition, it is used in cold-weather temporary structures where battery-powered smoke detection is impractical.
Verified Space Age W3-SEN-HTD specifications
- Manufacturer: Ramtech (Halma plc) — distributed in North America by Space Age Electronics under the W3- prefix
- Detection technology: Thermistor-based fixed-temperature sensing
- Activation temperature: 135°F (57°C) fixed
- Coverage radius: 17.5 ft individual coverage radius
- Power: Battery-operated; 3-year battery life
- Wireless: Operates on the WES3 radio mesh network; transmits and receives from other WES3 units
- Activation indicator: Visual flash for 30 minutes after activation for easy ground-level identification
- Environmental: WES3 system rated IP55 for temporary outdoor use
- Compatibility: WES3 Base Unit, WES3 Call Point, WES3 Smoke Sensor, WES3 Interface, and other WES3 mesh devices
How WES3 differs from a permanent fire alarm system
WES3 is a code-recognized temporary fire and evacuation system for construction sites — not a permanent NFPA 72 control panel. However, it pairs with the WES3 Standard Interface for integration to the building’s permanent system once one is energized. As a result, contractors deploy WES3 from groundbreaking through certificate-of-occupancy, then switch to the permanent system at handoff. In addition, the WES3 mesh requires no wiring between devices, so units redeploy as the site footprint changes.
Need help selecting the right part or verifying compatibility? Our team supports thousands of commercial fire alarm installations every year. Call us at 1-888-557-0558 or email sales@lifesafetycom.com for application guidance, lead-time updates, or volume pricing.
Additional information
| Weight | 4.5 lbs |
|---|---|
| Dimensions | 12.5 × 12.5 × 12.5 in |
| Condition | New |
| Manufacturers | Winland Electronics |
| Part Type | Sensor |
