Kidde Fenwal 27021-1 DETECT-A-FIRE 140 Degree Horizontal Surface Mount Heat Detector, Normally Open

Deliver steady, dependable heat detection where it matters most. The Kidde Fenwal DETECT-A-FIRE 27021-1 heat detector is engineered for commercial and industrial security and fire monitoring, offering a rate-compensated sensing element that detects elevated temperatures accurately without the nuisance of transient false alarms. Factory-set to a 140° F activation point with a normally open contact and 48V DC compatibility, this surface-mount temperature sensor integrates easily into fire alarm and suppression systems. Its stainless-steel shell and hermetically sealed internal contact provide durable, low-maintenance performance in harsh environments. Because the DETECT-A-FIRE design responds to actual surrounding air temperature rather than just rate-of-rise spikes, it delivers reliable protection for server rooms, clean-agent suppression setups, warehouses, and other critical surveillance and safety applications. Ideal for installations requiring wired connectivity and predictable, repeatable operation, the 27021-1 helps reduce installation and service costs through wide spacing allowances and self-restoring operation. Protect your facility with proven thermal detection—contact sales or add the Kidde Fenwal DETECT-A-FIRE heat detector to your specification today.

• Reliable early-warning heat sensing that triggers suppression and alarm systems quickly, reducing risk to assets and personnel
• Rate-compensated design minimizes false alarms from transient thermal changes for dependable monitoring in busy environments
• Surface-mount form factor and wired connectivity simplify installation on ceilings or horizontal surfaces for data centers, industrial, and commercial sites
• Robust stainless-steel shell with hermetically sealed contact provides long service life and low maintenance for critical security and fire systems
• Factory-set 140° F activation with normally open contact and 48V DC compatibility for seamless integration with existing control panels