
STI Wireless Exit Stopper Multifunction Door Alarm – Red
Key Features
- Wireless multifunction exit door alarm with integrated sounder.
- 105 dB alarm output with optional 95 dB low volume setting.
- 433 MHz supervised wireless transmission to compatible STI receivers.
- Key operated override for authorised exit.
- Selectable alarm durations: 30 seconds, 3 minutes or continuous.
- Highly visible stop sign style housing acts as a deterrent.
Specifications
- Item Code: STI6400WIR
- Housing Colour: Red
- Alarm Output: 105 dB (95 dB low volume option)
- Wireless Frequency: 433 MHz
- Wireless Range: Up to 150 m line of sight
- Alarm Modes: 30 seconds, 3 minutes or continuous
- Entry Delay: Immediate or 15 second delay
- Battery: 1 x 9V alkaline (included)
- Housing: Polycarbonate
What's In The Box
- STI wireless Exit Stopper alarm.
- 9V battery.
- Mounting hardware.
- Installation instructions.
Suitable Uses
- Emergency exit doors.
- Rear or service doors.
- Retail theft deterrent applications.
- Commercial and public building exits.
Dimensions

Frequently Asked Questions
- How loud is the alarm?
The unit sounds a 105 dB alarm, with an optional lower 95 dB setting. - Does this unit require wiring?
No. It is battery powered and wireless, but it can also be hard wired if required. - How far can the wireless signal reach?
Up to 150 metres line of sight when used with a compatible STI receiver.
Additional Information
- Highly visible design helps deter unauthorised use of exit doors.
- Internal reed switch can be repositioned for different door handings.
- Low battery warning indicator included.
- Recommended to test the alarm every six months and replace battery annually.
Technical Drawing

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