UniGuard UM552 is a compact, wired vehicle GPS tracker (for cars, trucks, and motorcycles) made by UniGuard Technology Limited. It uses 2G GSM/GPRS + GPS (with BeiDou/GLONASS support in some listings)
Parameter
Details
Dimensions
77 × 28 × 16 mm
w=30 g
Network
GSM/GPRS (2G)
Frequency bands
850 / 900 / 1800 / 1900 MHz
GPS / GNSS
Location accuracy
<10 m CEP
Time to first fix
Cold: < 32–35 s; Hot: < 1–2 s (open sky)
Working voltage
9–90 V DC (some listings: up to 9–100 V)
Power consumption
5–50 mA typical (sleep ≈ 5 mA; higher under load)
Backup battery
Built-in 90 mAh 3.7 V Li-polymer
Operating temperature
–20 °C to +70 °C
SIM
TCP/IP
Antenna
Built-in GNSS
Blue LED (GPS), Green LED (GSM/GPRS)
Real-time tracking via web platform and iOS/Android
Shock / vibration alarm (SMS + call)
ACC ON detection and alarm (SMS + call0