How manual break glass call point works in fire alarm system?

SR-A02 is manual breaking glass call point
here are the main feature:
1. The Break glass manual call point for fire alarm system and access control system
2. One way, two way(single pole/double pole)
3. Transparent cover optional for break glass fire alarm
4. Color optional:Red,Blue,Yellow,White,Green
5.Fast and easy installation
6.Special tool operating test facility
7.Unique"plug&play" installation concept
8.Terminal - max 2.5 mm2 cable
9.Net weight; 160gms
10.Size; 87 x 87 x 51mm(L x W x H)
More details:www.firealarmfactory.com/brea...
Main products：
Smoke detectors
Heat detectors
Fire alarm system （FACP fire alarm control panel）
Fire alamr bell
Fire strobe siren
Manual call point
Gas detector
Carbon monoxide detector
And other home security products, such as home alarm system,magnetic contact/motion detector/motion alarm switch/water alarm......
Welcome to inquiry us
Website：www.firealarmfactory.com/
Mobile Phone：[phone]
Telephone number：0086 755 89571625
Email: [e-mail]
Sales Manager: Effie Su
WhatsApp：[phone]
Facebook：Effie Sue

[@Comens1997]

I love it

[@banght5506]

Ijin share om 🙏

[@nentechnologies5525]

What is the positive wire and negative?

[@emanuelahmed2994]

Ibhave Alpplo XP95

[@vantagepointglobaltrading2537]

value of resistor sir?.

[@sumringeffie5250]

4.7ohm

[@vantagepointglobaltrading2537]

@@sumringeffie5250 ok sir tnx a lot it works..

[@sumringeffie5250]

4.7M resistor