https://www.asmag.com/project/gallagher_evolving_beyond_access_control/
Product Info
P&H S21 Photoelectric Smoke Detector

P&H S21 Photoelectric Smoke Detector

Shenzhen P&H Electronic Co., Ltd.
Region: China
Update: 08/02/2012
Key Specifications
Features:

* L ow power consumption with high precision and stability

* Durable sensor head and excellent smoke access

* Easy-fit bases for convenient wiring and installation

* Stainless steel inner housing for high ANTI-RFI

* Conventional output or LED indicating alarm

* Two or four wire models optional

https://www.supremainc.com/en/hardware/ai-powered-biometric-terminal-biostation-3-max.asp?utm_source=asmag&utm_medium=banner_ad&utm_campaign=bs3-max-launch