Electronic Ankle Monitor Model DZJK-YD-03

1.Communication Frequency Bands：Supports GSM850/GSM900, DCS1800/PCS1900, and GPRS (data transmission).

2.Battery Life:Battery capacity: >3000mAh,Continuous operation time: >72 hours when fully charged, task activated, and no alarm triggered Continuous operation time in low-battery alarm and escape status: >1 hour.

3.Enclosure Protection Level Test:Complies with the requirements of IP68 specified in GB 4208-2008 (Degrees of protection provided by enclosure)

4.Distance Measurement Mode:The police mobile app can perform real-time distance measurement with paired monitoring ankle monitors, and the warning range is configurable.

5.Positioning Modes:Equipped with BeiDou, GPS, and LBS positioning capabilities.

6.Positioning Accuracy:GPS positioning accuracy in open areas: 3-5 meters.LBS positioning accuracy in urban areas: <1 km.

7.Charging Time:<6 hours

8.Low Voltage Alarm:Triggers an alarm signal when the battery level is below 15%.

9.Alarm Function Test:Both the mobile phone and the electronic ankle monitor generate alarm messages when:The distance between the electronic ankle monitor and the police mobile phone exceeds the threshold.The electronic ankle monitor is opened abnormally.

10.Material and Structure:Main body: Made of high-strength aerospace aluminum alloy Functional module housing: Made of glass fiber reinforced nylon composite material (PA+GF).

11.Drop Test Height: 1.2 meters onto concrete floor Test procedure: 2 drops on each face, totaling 12 drops

Result: No damage, normal operation after the test.

12.Vibration Test Frequency range and acceleration:5~20 Hz: Amplitude 3.5 mm 20~30 Hz: Acceleration 5g

30~200 Hz: Acceleration 3g Sweep rate: 1 octave per minute Duration: 30 minutes for each of X, Y, Z directions Result: Normal operation after the test

13.Shock Test: Shock pulse waveform: Half-sine Acceleration amplitude: 30g Pulse duration: 11ms Times: 3 times for each of X, Y, Z directions Result: Normal operation after the test

14.Tensile Test :Can withstand a static tension of 1000N for 1 minute without damage.

15.Stability Test:Can work continuously for 72 hours without false alarms or missed alarms.

16.Alarm Sound Level Test:Not less than 86dB (measured at 10cm from the sample).

17.Electrostatic Discharge Immunity Test:Test conditions: In operating state, air discharge±10000V, contact discharge±6000V.Acceptance criteria: Temporary loss or reduction of functions or performance is allowed during the test, but the device shall automatically recover without operator intervention after the disturbance stops.

18.Satellite Positioning Function Test:Can upload position information to the command and management center.

19.Low Temperature Test:Temperature: -20°C ±3°C ,Duration: 16 hours,Result: Normal startup.

20.High Temperature Test:Temperature: +55°C ±2°C,Duration: 16 hours,Result: Normal startup.

21.Constant Humidity and Heat Test:Humidity: 93%、Temperature: 40°C ±2°C、Duration: 24 hours.

22.Task Mode：Supports binding of single device or multiple devices.

23.Usage Modes：Supports direct use on the public security intranet.

24.Weight：320g.