![Exit Stopper, STI-6400, Safety Technology International, Emergency Exit Door Alarm, Self Contained Fire Door Alarm, Stop Misuse Unauthorised Access Theft,Red,6.8L x 2.7W centimetres : Amazon.co.uk: DIY & Tools Exit Stopper, STI-6400, Safety Technology International, Emergency Exit Door Alarm, Self Contained Fire Door Alarm, Stop Misuse Unauthorised Access Theft,Red,6.8L x 2.7W centimetres : Amazon.co.uk: DIY & Tools](https://m.media-amazon.com/images/I/61-5NenwsiL._AC_SL1500_.jpg)
Exit Stopper, STI-6400, Safety Technology International, Emergency Exit Door Alarm, Self Contained Fire Door Alarm, Stop Misuse Unauthorised Access Theft,Red,6.8L x 2.7W centimetres : Amazon.co.uk: DIY & Tools
![STI WIRELESS EXIT STOPPER MULTIFUNCTION DOOR ALARM | STI Exit Alarms - LSC | Complete Security Solutions - LSC Security Supplies STI WIRELESS EXIT STOPPER MULTIFUNCTION DOOR ALARM | STI Exit Alarms - LSC | Complete Security Solutions - LSC Security Supplies](https://www.lsc.com.au/images/ProductImages/500/STI6400WIR.jpg)
STI WIRELESS EXIT STOPPER MULTIFUNCTION DOOR ALARM | STI Exit Alarms - LSC | Complete Security Solutions - LSC Security Supplies
![Red STI-6400WIR8 Wireless Exit Stopper Multi-Function Door Alarm with 8-Channel Receiver | Fire Safety Store STI-6400WIR8 Red STI-6400WIR8 Wireless Exit Stopper Multi-Function Door Alarm with 8-Channel Receiver | Fire Safety Store STI-6400WIR8](https://www.firesafetystore.co.uk/images/watermarked/1/detailed/5/sti-6400wir8_white.png)