APRA Agent E ovenkosketinkytkin 235-101-53

Securing doors and windows in alarm systems often means dealing with bulky sensors that are difficult to mount and prone to false alarms. The APRA Agent E 235-101-53 solves this with a discreet surface-mounted reed switch that delivers reliable open/close detection in a compact ABS housing. Its normally closed contact ensures immediate alarm triggering when the magnetic field is broken, while the integrated tamper contact guards against unauthorized bypass attempts. Ideal for indoor access control and intrusion detection, this switch operates silently and requires no maintenance.

Who is it for

This door contact switch is built for security installers, facility managers, and DIY enthusiasts who need a dependable, VdS-approved component for alarm systems, access control panels, or home automation. Whether protecting a server room, a retail entrance, or a residential front door, the Agent E provides consistent performance in temperatures from -20°C to +70°C.

Main features

• Normally closed (NC) reed contact with a switching gap up to 15 mm
• Surface-mounted design with rear cable entry for clean wiring
• ABS plastic housing in white, rated IP40 for indoor use
• Integrated tamper contact to detect removal or sabotage
• VdS approval G106001 (Class B) for insurance-grade security
• Wide operating temperature range: -20°C to +70°C
• Low power switching: max 30 V DC / 24 V AC, 0.5 A, 10 W
• Includes matching magnet (58 x 18 x 12 mm) for easy alignment

Specifications

• Product type: Door contact switch (reed)
• Contact type: Normally closed (NC)
• Mounting: Surface-mounted
• Housing material: ABS plastic
• Colour: White
• Connection: Screw terminals
• Max switching voltage: 30 V DC / 24 V AC
• Max switching current: 0.5 A
• Max switching power: 10 W
• Operating temperature: -20°C to +70°C
• Protection class: IP40
• VdS approval: G106001 (Class B)
• Switching distance: up to 15 mm
• Cable entry: Rear
• Tamper protection: Integrated tamper contact
• Application: Alarm systems, access control, door/window monitoring
• Number of contacts: 1 (reed contact)
• Installation environment: Indoor
• Magnet included: Yes
• Magnet dimensions: 58 x 18 x 12 mm

Tips

For optimal reliability, mount the switch on the fixed frame and the magnet on the moving part, ensuring the gap does not exceed 15 mm when closed. Test the tamper circuit after installation by briefly removing the cover. Use twisted-pair or shielded cable for runs longer than 10 meters to avoid interference. Pair with a control panel that supports NC zones and end-of-line resistors if required by your system.