User Manual

Document # E.0015.16.07 396333
2 Door / Window Sensor
2.1 Description
The door / window sensor unit consists of an RF transceiver, a micro-controller, a non-
volatile memory, a power supply, a magnetic switch, a tamper switch and a battery.
The sensor unit is composed of the following principal parts:
• Sensor assembly.
• Magnet block.
• 3V Lithium HNO
2
battery type CR2.
The sensor assembly includes the following subassemblies:
• Mounting plate.
• Sensor base.
• Sensor PCB with RF controller, terminal block, reed switch and LED.
• Cover.
An exploded view of the door / window sensor unit 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.
Events reported – door / window opened, door / window closed, tamper.
Automatic self-test (transmission of a data packet and receipt of acknowledgment).
Magnet gap from sensor – 3 mm max.
Power source – 3V Lithium MNO
2
battery type CR2.
Average current drain in normal use – 8 uA
Current drain in “no change” state – 5 uA
Sensor dimensions (mm): L-58, W-58, D-29.
Magnet dimensions (mm): L-37, W-13, D-13.
Weight (grams): 55.