PRODUCT SELECTION

Fire & Smoke Detection

Define detection inputs, alarm behavior and application requirements.

RS-SMK-001-01 / Model reference

Manufacturer reference: Best Modules BM22S2021-1. Technical information and project integration support.

Parameter	Published reference
Principle	Photoelectric smoke detection; white / black smoke channels
Detection range	0.1-0.8 dB/m · p.3; not gas ppm or a PM2.5 concentration range
Operating supply	3.0-5.0 V DC · p.5; absolute maximum is not operating voltage
Interface	UART TX/RX and STATUS alarm output · pp.4,6
UART rate	9600 bit/s · p.3

Selection item	What your project needs
Detection task	Smoke, heat or other required detection input
Environment	Dust, moisture, airflow and likely interference
Application requirements	Required approvals, alarm interface and installation rules
Integration	Power, relay / data output and maintenance workflow

Send the measurement requirements for model selection and system integration.

Measurement requirement *Performance targetInterface & powerDeployment scale

Requirement	Confirm for the selected model
Device interface	Sensor output and host / acquisition compatibility
MQTT	Native device output, gateway conversion or custom integration
OTA	Firmware scope, compatible devices and recovery requirements