Shop a school project door alarm and buzzer

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$1,011.00
Netbell-KL Network IP-Based Wireless Automatic All-In-One Extra Loud Break Bell System Break Time Alarm Bell For School Factory Warehouse
Linortek
$1,011.00
Netbell-KL Network IP-Based Wireless Automatic All-In-One Extra Loud Break Bell System Break Time Alarm Bell For School Factory Warehouse
Linortek
$1,011.00
Netbell-KL Network IP-Based Wireless Automatic All-In-One Extra Loud Break Bell Clock System Break Time Alarm Bell For School Factory Warehouse
Linortek
$1,011.00
Netbell-KL Network IP-Based Wireless Automatic All-In-One Extra Loud Break Bell Clock System Break Time Alarm Bell For School Factory Warehouse
Linortek
$763.00
Netbell-2 Network Break Bell Buzzer System For School Warehouse Factory Break Time Alarm Bell
Linortek
$763.00
Netbell-2 Network Break Bell Buzzer System For School Warehouse Factory Break Time Alarm Bell
Linortek
$249.55
Seton Detex Detex Door Security Alarm EAX-500 | Each
Seton
$249.55
Seton Detex Detex Door Security Alarm EAX-500 | Each
Seton
$318.18
DETEX Surface Mount Battery Powered 100DB Door Prop Alarm With Internal Magnetic Door Contacts And Gray Box Gray Finish EAX300GRY
DkHardware.com
$318.18
DETEX Surface Mount Battery Powered 100DB Door Prop Alarm With Internal Magnetic Door Contacts And Gray Box Gray Finish EAX300GRY
DkHardware.com
$29.00
Trine BZ-12 Buzzer For 12 DC Operation
American Locksets
$29.00
Trine BZ-12 Buzzer For 12 DC Operation
American Locksets
$20.00
Trine BZ-12 Buzzer 12VDC
B and H Depot
$20.00
Trine BZ-12 Buzzer 12VDC
B and H Depot
$162.00
Alarm Lock Pg21ms | Narrow Stile Surface Mounted Door Alarm | Exit Devices, Alarms & Panic Bars
Qualified Hardware
Free shipping
$162.00
Alarm Lock Pg21ms | Narrow Stile Surface Mounted Door Alarm | Exit Devices, Alarms & Panic Bars
Qualified Hardware
$21.99
Wireless Door Chime For Business Entering, Door Open Alarm For Kid/Toddler Home Safety (500ft Range 51 Ringer) Door Dinger Buzzer Alert, 1 Receiver +2
Amazon.com
110
$21.99
Wireless Door Chime For Business Entering, Door Open Alarm For Kid/Toddler Home Safety (500ft Range 51 Ringer) Door Dinger Buzzer Alert, 1 Receiver +2
Amazon.com
$10.99
Wireless Doorbell Loud Classroom Doorbell IP66 Waterproof Doorbell 1000ft 66 Chimes Mute Mode 115Db 7-Level Vol Electric Door Bell Ringer For Home
Amazon.com
1K+
$10.99
Wireless Doorbell Loud Classroom Doorbell IP66 Waterproof Doorbell 1000ft 66 Chimes Mute Mode 115Db 7-Level Vol Electric Door Bell Ringer For Home
Amazon.com
$401.00
Trine Wireless Kit - Electric Strike Buzzer System Kit - Fits Most Door
Keyless Access Locks
$401.00
Trine Wireless Kit - Electric Strike Buzzer System Kit - Fits Most Door
Keyless Access Locks
$401.00
Trine Wired Electric Strike Buzzer System Kit Fits Most Door
Keyless Access Locks
$401.00
Trine Wired Electric Strike Buzzer System Kit Fits Most Door
Keyless Access Locks
$18.00
Trine 270 Buzzer 92Db At 3' 3-6VDC/8-16VAC 1 Amp Bright Chrome
B and H Depot
$18.00
Trine 270 Buzzer 92Db At 3' 3-6VDC/8-16VAC 1 Amp Bright Chrome
B and H Depot
$18.00
All Security Equipment Model BZ05 External Buzzer For Access Control System
All Security Equipment
$18.00
All Security Equipment Model BZ05 External Buzzer For Access Control System
All Security Equipment
$97.00
SDC 101-1A Remote Or Local Single Door Annunciator With Audible Alarm And Tricolor LED Single Gang Green - Secure Amber - Egress Initiated Red - Door Locked
B and H Depot
$97.00
SDC 101-1A Remote Or Local Single Door Annunciator With Audible Alarm And Tricolor LED Single Gang Green - Secure Amber - Egress Initiated Red - Door Locked
B and H Depot
$13.99
IP66 Doorbell Wireless Classroom Doorbell Waterproof & Dustproof With 66 Chimes Loud 115Db Door Bell Ringer 1000ft Range Electric Doorbells 7 Levels
Amazon.com
228
$13.99
IP66 Doorbell Wireless Classroom Doorbell Waterproof & Dustproof With 66 Chimes Loud 115Db Door Bell Ringer 1000ft Range Electric Doorbells 7 Levels
Amazon.com
$479.00
SDC 15-2-3-KIT DOOR BUZZ-IN ELECTRIC STRIKE KIT W/ ON/OFF REMOTE BUTTON (Includes 25-4U, 15-2-3, And TR24 )
Keyless Access Locks
$479.00
SDC 15-2-3-KIT DOOR BUZZ-IN ELECTRIC STRIKE KIT W/ ON/OFF REMOTE BUTTON (Includes 25-4U, 15-2-3, And TR24 )
Keyless Access Locks
$74.00
$88.45
Safety Technology STI6400 Multifunction Door Alarm
BSA Security Integrators
490
16% off
$74.00
$88.45
Safety Technology STI6400 Multifunction Door Alarm
BSA Security Integrators
$110.94
340A-N5 EDWARDS SIGNALING - Panel Accessories & Buzzer/Horn/Alarm Supplies
Radwell.com
1
$110.94
340A-N5 EDWARDS SIGNALING - Panel Accessories & Buzzer/Horn/Alarm Supplies
Radwell.com
$180.50
340A-G5 EDWARDS SIGNALING - Panel Accessories & Buzzer/Horn/Alarm Supplies
Radwell.com
13
$180.50
340A-G5 EDWARDS SIGNALING - Panel Accessories & Buzzer/Horn/Alarm Supplies
Radwell.com
$61.09
$91.64
Camden - CX-DA100 - Door Alarm With Sounder Single Gang And 3-24 VDC
LocksmithKeyless
33% off
$61.09
$91.64
Camden - CX-DA100 - Door Alarm With Sounder Single Gang And 3-24 VDC
LocksmithKeyless
$47.90
VEVOR Door Chime Dc 12V Wireless Door Open Contact Sensor Alarm Chime With 656 ft Range Remote Control With App Doors Ringer Alert For Business Store
VEVOR
$47.90
VEVOR Door Chime Dc 12V Wireless Door Open Contact Sensor Alarm Chime With 656 ft Range Remote Control With App Doors Ringer Alert For Business Store
VEVOR
$19.90
VEVOR Door Chime Dc 12V Wireless Door Open Contact Sensor Alarm Chime With 656 ft Range 58 Chimes & 5 Adjustable Volume Doors Ringer Alert For
VEVOR
$19.90
VEVOR Door Chime Dc 12V Wireless Door Open Contact Sensor Alarm Chime With 656 ft Range 58 Chimes & 5 Adjustable Volume Doors Ringer Alert For
VEVOR
$194.12
Wireless Commercial Chime Kit - Long-Range Doorbell With Loud Siren And Volume Control For Will-Call Counters And Warehouse Notifications
Milton Industries
$194.12
Wireless Commercial Chime Kit - Long-Range Doorbell With Loud Siren And Volume Control For Will-Call Counters And Warehouse Notifications
Milton Industries
$157.36
EAX-500 DETEX - Panel Accessories & Buzzer/Horn/Alarm Supplies
Radwell.com
7
$157.36
EAX-500 DETEX - Panel Accessories & Buzzer/Horn/Alarm Supplies
Radwell.com
$10.40
Rofu 9000 Electric Buzzer
American Locksets
$10.40
Rofu 9000 Electric Buzzer
American Locksets
$13.44
Noark G ND16-22FS AC/DC 24V Red Buzzers & Audible Alarms
Wolf Automation - Production
$13.44
Noark G ND16-22FS AC/DC 24V Red Buzzers & Audible Alarms
Wolf Automation - Production
$200.01
Securitron DPA Door Prop Alarm -12 VDC
Trudoor
$200.01
Securitron DPA Door Prop Alarm -12 VDC
Trudoor
$24.60
Heath Zenith Door Chime Buzzer Matte Silver Metal Wired Matte SL-170
DkHardware.com
1
$24.60
Heath Zenith Door Chime Buzzer Matte Silver Metal Wired Matte SL-170
DkHardware.com
$21.73
Trine Access Technology BZ-12 | Door Buzzer Audible Mini, For 12 Volt DC Electric Strike
AllDataResource.com
$21.73
Trine Access Technology BZ-12 | Door Buzzer Audible Mini, For 12 Volt DC Electric Strike
AllDataResource.com
$408.00
Dortronics 7281 Series Local Door Exit Alarm Alarm With Adjustable 2-60 Second Delay Alarm Output DPDT Relay Tri-State LED Piezo Sounder R 7281-EA
DkHardware.com
$408.00
Dortronics 7281 Series Local Door Exit Alarm Alarm With Adjustable 2-60 Second Delay Alarm Output DPDT Relay Tri-State LED Piezo Sounder R 7281-EA
DkHardware.com
$44.97
$89.94
Wireless Doorbell Plug & Play Waterproof Door Bell Kit, 45 Chimes, LED Flash, 4 Volume Levels | Dynamicdeals
Inspire Uplift
Free shipping
50% off
$44.97
$89.94
Wireless Doorbell Plug & Play Waterproof Door Bell Kit, 45 Chimes, LED Flash, 4 Volume Levels | Dynamicdeals
Inspire Uplift
$44.72
Ghbunuz Security Buzzer For Elementary School Students Security Alarm Female Loud 130 Db Alarm Buzzer Led Light Battery
Everymarket INC
$44.72
Ghbunuz Security Buzzer For Elementary School Students Security Alarm Female Loud 130 Db Alarm Buzzer Led Light Battery
Everymarket INC
$39.99
School Bus Rear Door Buzzer Kit
eBay
Free shipping
$39.99
School Bus Rear Door Buzzer Kit
eBay
$16.08
Security Buzzer, Children's School Bag, Elementary School Students, Entrance Window, Notification Buzzer, Loud Volume, L
Everymarket INC
$16.08
Security Buzzer, Children's School Bag, Elementary School Students, Entrance Window, Notification Buzzer, Loud Volume, L
Everymarket INC
$37.99
Wireless Door Chime, Door Dinger Buzzer Alert, 1 Receiver +2 Sensor
eBay
Free shipping
$37.99
Wireless Door Chime, Door Dinger Buzzer Alert, 1 Receiver +2 Sensor
eBay
How to build the school project alarm and buzzer system door with ‪@ebz_salajee‬
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Shop a school project door alarm and buzzer

Sponsored
About our ads
$1,011.00
Netbell-KL Network IP-Based Wireless Automatic All-In-One Extra Loud Break Bell System Break Time Alarm Bell For School Factory Warehouse
Linortek
$1,011.00
Netbell-KL Network IP-Based Wireless Automatic All-In-One Extra Loud Break Bell System Break Time Alarm Bell For School Factory Warehouse
Linortek
$1,011.00
Netbell-KL Network IP-Based Wireless Automatic All-In-One Extra Loud Break Bell Clock System Break Time Alarm Bell For School Factory Warehouse
Linortek
$1,011.00
Netbell-KL Network IP-Based Wireless Automatic All-In-One Extra Loud Break Bell Clock System Break Time Alarm Bell For School Factory Warehouse
Linortek
$763.00
Netbell-2 Network Break Bell Buzzer System For School Warehouse Factory Break Time Alarm Bell
Linortek
$763.00
Netbell-2 Network Break Bell Buzzer System For School Warehouse Factory Break Time Alarm Bell
Linortek
$249.55
Seton Detex Detex Door Security Alarm EAX-500 | Each
Seton
$249.55
Seton Detex Detex Door Security Alarm EAX-500 | Each
Seton
$318.18
DETEX Surface Mount Battery Powered 100DB Door Prop Alarm With Internal Magnetic Door Contacts And Gray Box Gray Finish EAX300GRY
DkHardware.com
$318.18
DETEX Surface Mount Battery Powered 100DB Door Prop Alarm With Internal Magnetic Door Contacts And Gray Box Gray Finish EAX300GRY
DkHardware.com
$29.00
Trine BZ-12 Buzzer For 12 DC Operation
American Locksets
$29.00
Trine BZ-12 Buzzer For 12 DC Operation
American Locksets
$20.00
Trine BZ-12 Buzzer 12VDC
B and H Depot
$20.00
Trine BZ-12 Buzzer 12VDC
B and H Depot
$162.00
Alarm Lock Pg21ms | Narrow Stile Surface Mounted Door Alarm | Exit Devices, Alarms & Panic Bars
Qualified Hardware
Free shipping
$162.00
Alarm Lock Pg21ms | Narrow Stile Surface Mounted Door Alarm | Exit Devices, Alarms & Panic Bars
Qualified Hardware
$21.99
Wireless Door Chime For Business Entering, Door Open Alarm For Kid/Toddler Home Safety (500ft Range 51 Ringer) Door Dinger Buzzer Alert, 1 Receiver +2
Amazon.com
110
$21.99
Wireless Door Chime For Business Entering, Door Open Alarm For Kid/Toddler Home Safety (500ft Range 51 Ringer) Door Dinger Buzzer Alert, 1 Receiver +2
Amazon.com
$10.99
Wireless Doorbell Loud Classroom Doorbell IP66 Waterproof Doorbell 1000ft 66 Chimes Mute Mode 115Db 7-Level Vol Electric Door Bell Ringer For Home
Amazon.com
1K+
$10.99
Wireless Doorbell Loud Classroom Doorbell IP66 Waterproof Doorbell 1000ft 66 Chimes Mute Mode 115Db 7-Level Vol Electric Door Bell Ringer For Home
Amazon.com
$401.00
Trine Wireless Kit - Electric Strike Buzzer System Kit - Fits Most Door
Keyless Access Locks
$401.00
Trine Wireless Kit - Electric Strike Buzzer System Kit - Fits Most Door
Keyless Access Locks
$401.00
Trine Wired Electric Strike Buzzer System Kit Fits Most Door
Keyless Access Locks
$401.00
Trine Wired Electric Strike Buzzer System Kit Fits Most Door
Keyless Access Locks
$18.00
Trine 270 Buzzer 92Db At 3' 3-6VDC/8-16VAC 1 Amp Bright Chrome
B and H Depot
$18.00
Trine 270 Buzzer 92Db At 3' 3-6VDC/8-16VAC 1 Amp Bright Chrome
B and H Depot
$18.00
All Security Equipment Model BZ05 External Buzzer For Access Control System
All Security Equipment
$18.00
All Security Equipment Model BZ05 External Buzzer For Access Control System
All Security Equipment
$97.00
SDC 101-1A Remote Or Local Single Door Annunciator With Audible Alarm And Tricolor LED Single Gang Green - Secure Amber - Egress Initiated Red - Door Locked
B and H Depot
$97.00
SDC 101-1A Remote Or Local Single Door Annunciator With Audible Alarm And Tricolor LED Single Gang Green - Secure Amber - Egress Initiated Red - Door Locked
B and H Depot
$13.99
IP66 Doorbell Wireless Classroom Doorbell Waterproof & Dustproof With 66 Chimes Loud 115Db Door Bell Ringer 1000ft Range Electric Doorbells 7 Levels
Amazon.com
228
$13.99
IP66 Doorbell Wireless Classroom Doorbell Waterproof & Dustproof With 66 Chimes Loud 115Db Door Bell Ringer 1000ft Range Electric Doorbells 7 Levels
Amazon.com
$479.00
SDC 15-2-3-KIT DOOR BUZZ-IN ELECTRIC STRIKE KIT W/ ON/OFF REMOTE BUTTON (Includes 25-4U, 15-2-3, And TR24 )
Keyless Access Locks
$479.00
SDC 15-2-3-KIT DOOR BUZZ-IN ELECTRIC STRIKE KIT W/ ON/OFF REMOTE BUTTON (Includes 25-4U, 15-2-3, And TR24 )
Keyless Access Locks
$74.00
$88.45
Safety Technology STI6400 Multifunction Door Alarm
BSA Security Integrators
490
16% off
$74.00
$88.45
Safety Technology STI6400 Multifunction Door Alarm
BSA Security Integrators