Knight Fire & Security D25 – Grade 2 5-Screw Surface Contact With a Spring Tamper Switch

Knight Fire 5-Screw Surface Contact With a Spring Tamper Switch The Knight Fire & Security D25 is a professional-grade 5-screw surface contact designed for high-security installations. Built to Grade 2 security standards, it features a spring tamper switch that detects removal from the fitting surface, providing enhanced security against tampering. The versatile 5-terminal design includes two nickel screws to govern the reed switch, plus three spare brass screws for custom wiring configurations. Ideal for both residential and commercial security systems, the D25/B ensures long-lasting performance with a durable high-impact polystyrene body and a ferrite or Alnico V magnet for reliable operation. Key Features & Benefits: Security Grade 2 Certified – Tamper switch detects removal for enhanced protection. Versatile 5-Screw Design – Two nickel screws for the reed switch and three spare brass screws for custom configurations. Reliable Performance – Designed with high-quality rhodium contacts for consistent switching and durability. Easy Installation – Supplied with fitting screws for secure mounting. Temperature Resistant – Operates in extreme conditions from -40°C to 50°C. Available in Two Colours – White (D25) and Brown (D25B) to suit different installation aesthetics. Technical Specifications: Grade: 2 Environmental Class: II Contact Type: Single Reed Tamper Protection: Spring tamper switch detects removal Operating Gap: 20mm (approx.) Material: High-impact polystyrene (D25) / ABS plastic (D25B) Magnet Type: Ferrite or Alnico V Contact Material: Rhodium Voltage Range: 1–100V DC / 125V AC max Switching Current: 500mA max DC / 500mA max AC Operating Temperature: -40°C to 50°C Fixings: Supplied with fitting screws Colour Options: White (D25) / Brown (D25B) Why Choose the D25? Designed for professional security applications, the D25 5-Screw Surface Contact is an installer-friendly, high-performance solution for security systems requiring reliable detection and tamper protection. The inclusion of spare terminals allows for custom configurations, making it a versatile choice for various setups.