Open the door and see if the siren sounds. 1/2/4/6/8/10X Alarm Kit (alarm unit & magnetic sensor). Sensor type: alarm. Magnetic sensor: 9X3X2CM. Alarm type: sound. Alarm unit: 4.5X1.5X1.5CM. Fix the host to the door / window with double-sided tape.
eBay
1/2/4/6/8CH 433Mhz RF Remote Control EV1527Learning code Universal 4 Buttons For Gate garage door controller Alarm Receiver
Aliexpress UK
Do not disassemble or refit internal parts arbitrarily. Do not soak or rain. More than 120 Db high decibel alarm sound, really to deter the role of thieves. 1 Magnetic Sensor(Battery Not Included).
eBay
Zigbee Door Sensor Magnetic Window Open Closed Alarm Detector Works With Ewelink APP Alexa Google Need Gateway Black White Color
Aliexpress UK
✔ 230m Long-Distance Range. ✔ Loud 90dB Alert Signal. ✔ 2-Piece Entry Alarm Set. Its strong magnetic sensor technology ensures consistent triggering, while the compact build makes it suitable for virtually any application.
eBay
Door Access Opener remote control switch 5V 6V 9V 12V Remote Control Push Button RF Wireless Switch 315 433 mhz Smart Home Alarm
Aliexpress UK
One Set Of Tuya Alarm Host A External wired alarm connectors: 1 channel external wireless siren, 1 channel. Wireless Frequency ：433MHz. Siren output：<500mA. Emission Frequency：433MHz. GSM system：850/900/1800/1900MHz.
eBay
304 stainless steel open bolt door buckle door bolt wooden door anti-theft door lock buckle door bolt old-fashioned door pin
Aliexpress UK
Open the door and see if the siren sounds. 1/2/4/10X Alarm Kit (alarm unit & magnetic sensor). Sensor type: alarm. Alarm type: sound. Fix the host to the door / window with double-sided tape. (Battery is not included).
eBay
Annke 4MP solar security cameras 10CH 12 in LCD 2.4G 5.8G PTZ wifi security cameras PIR color night vision camera security wifi
Aliexpress UK
1 Wireless PIR Motion Detector with 9V Battery. The host supports up to 30pcs wireless detectors, 8pcs remote key fobs, 4 doorbell buttons. Alarm sound: up to 115 dB. 2 Wireless Remote Key Fobs with 23A 12V Battery.
eBay
Authentic part manufactured by eufy. Used for mounting the doorbell on the wall. Compatible with eufy Security Video Doorbell S330
eufy UK
120 dB Siren: When the door stop alarm is triggered, it will give a very loud 120 dB alarm, which will help prevent intruders and remind the landlord or tenant. Door Stopper: When the door stop alarm is closed, the alarm can be used as an ordinary door to keep the door in any open position.
eBay
Cam Lock Security Lock 16-40mm Cabinet Cam Lock Door Barrel Drawer Filing Cabinet Post Mail Box Furniture Locker Cupboard 2 Key
Aliexpress UK
Description:Surface mount contact, screw mount white ABS housing. Wire is not included.Comes with installation screws.Great for use in family and factory wooden window, doors. etc.Switch Type: NC(normal close type), NC : When the magnet together, the circuit is conductive ,When the magnet separate,the circuit not conductive .When make order,please check carefully! .
eBay
4 Sizes Mailbox Lock With 2 Keys For File Cabinet Tool Box Locker Cam Lock Security Lock Furniture Hardware Door Mail Box Locker
Aliexpress UK