User's Manual

Page 8 of 8 pages
Document # E0015.16.08 400280
2 Smoke Detector
2.1 Description
The UL-approved smoke detector sensor unit consists of an RF transceiver, a micro-
controller, a photoelectric smoke detector cell with processing ASIC, a test button, a
buzzer and two batteries.
The sensor unit is composed of the following principal parts:
• Mounting plate.
• Sensor base.
• Sensor PCB with RF controller, terminal block, test button, buzzer and
LED.
• 9V alkaline battery type 1604.
• 3V Lithium HNO
2
battery type CR2
• Cover.
An exploded view of the smoke detector is shown in Figure 1 below.
2.2 Technical Specifications
Operating frequency band – ISM 902-928 MHz.
Mode of operation – frequency hopping; every data packet is transmitted on a different
pseudo random selected frequency.
Data packet transmission duration – less than 7 milliseconds.
Data packet validity check – CRC.
Transmission and reception verification – two-way communication; each received packet is
acknowledged, with an automatic repeat request (ARQ) in case of unacknowledged data
packet.
Automatic self-test (transmission of a data packet and receipt of acknowledgment).
Events reported – smoke detected, smoke cleared.
Smoke detector sensitivity – 3±0.7% / ft.
Smoke detector UL compliance – UL 217.
Power source – Smoke detector battery – alkaline, 9Volt, type 1604.
Wireless transceiver/controller battery - Lithium MNO
2,
3Volt type CR2.
Smoke detector average current drain – 10 uA
Transceiver average current drain – 5 uA.
Operating temperature range – 0°C to 45°C.
Dimensions (mm): ∅-116, H-60.