User's Guide

Gen2 BLE Sensor Family User Guide T0007796_UG_Portable Version 0.2
TEKTELIC Communications Inc. Page 13 of 30
Parameter
Specification
Power Source
Battery-powered:
1x AA-cell LTC (3.6 V), or
1x C-cell LTC (3.6 V)
Network technology/Frequency band
LoRaWAN in the following Global ISM bands [1]:
AS923, AU915, EU868, IN865, KR920, RU864, US915
Air Interface
LoRa, BLE
Maximum Tx Power
15 dBm (AS923, KR920, EU868)
22 dBm (AU915, IN865, US915)
Sensing Elements
BLE transceiver, accelerometer, thermometer, magnetic reed
switch, battery gauge
(not all sensing elements are available on all variants)
Bluetooth Compatibility
BLE based on Bluetooth 5
LoRa RF Sensitivity
Up to -137 dBm (SF12, 125 kHz BW)
BLE Sensitivity (0.1% BER)
125 kbps: -103 dBm
500 kbps: -98 dBm
2 Mbps: -91 dBm
Accelerometer Sensitivity
Sample rate: 1, 10, 25, 50, 100, 200, 400 Hz
Measurement range: ±2, ±4, ±8, ±16 g
Precision: 16, 32, 64, 192 mg
Function Button
Panic alarm (SafeAlert variants)
Forcing ULs and user feedback (Contact Tracing Device variants)
User Feedback
Buzzer and vibration motor
LEDs
Green: Joining the network activity (all variants)
Red: LoRa Tx or Rx activity (all variants)
Battery Fuel Gauge Features
Measures battery voltage, current, and temperature
EOS alert when the capacity is at 5%
Battery Lifetime
3 months (Contact Tracing Device, Indoor variants)
6 months (Contact Tracing Device, Outdoor variants)
5 years (SafeAlert variants)
1.4.1 Bluetooth Low-Energy (BLE) Transceiver
The protable Gen2 variants are equipped with a BLE module that is embedded in the MCU. It
serves as a BLE central device that periodically searches to discover nearby BLE peripherals, and
in some cases, periodically broadcasts advertising packets to be visible to other devices. It can
be used as a standalone proximity sensor that can also help at positioning.
The BLE scan can be disabled entirely or enabled at any time. Figure 1-5 shows the BLE scan
scheme when the BLE scan is enabled. As shown in the figure, BLE scans are performed
periodically. Each scan duration is divided into scan intervals. The BLE scan is performed only in
the scan window portion of the scan interval. The ratio of the scan window to the scan interval
is the scan duty cycle. In the case of the scan window equalling the scan interval, the scan duty