Zero (ZE2)
Images
Overview
Our smallest core GPS tracking device.
| Name | Zero |
|---|---|
| Version | 2 |
| SKU | ZE2 |
| Serial prefix | 19 |
| Connectivity | cellular, bluetooth-le |
| Positioning | gnss, wifi |
| Sensors | accelerometer, temperature |
Physical
| Size | |
|---|---|
| Dimensions Mm | 56 x 37 x 12.9 |
| Weight G | 35 |
| Certifications | |
| 0 | CE |
| Rating | |
| Ip | IP66 |
| Ik | Shockproof |
| Operating Temperature C | 0 to +50 |
User Interface
| Buttons | |
|---|---|
| Multi Purpose | Status Check, Trigger Update, Software Reset, Hardware Reset |
| Leds | |
| Status | Single Color LED x4, Indicates device status (battery level, charging, connected, etc.) |
Connectivity
| Cellular | |
|---|---|
| Technologies | LTE CAT-M1, GPRS, EDGE |
| Territory | Global |
| Bands | LTE FDD: B1, B2, B3, B4, B5, B8, B12, B13, B18, B19, B20, B26, B28 LTE TDD: B39 Gsm: 850MHz, 900MHz, 1800MHz, 1900MHz |
| Bluetooth LE | |
| Technologies | Low Power Broadcasting (iBeacon), Gateway Scanning, Child (peripheral) device |
| Territory | Global |
| Version | 5.4 |
Positioning
| Gnss | |
|---|---|
| Typical Accuracy Meters | 1-5 |
| Technologies | GPS, GLONASS, BeiDou |
| Constellations | GPS: Bands: L1: 1575.42 GLONASS: Bands: L1: 1602 + n x 0.5625 (n=-7,...6) BeiDou: Bands: L1: 1575.42 |
| Wifi | |
| Typical Accuracy Meters | 10-30 |
| Technologies | 2.4Ghz Wi-Fi AP scanning |
Sensors
| Accelerometer | |
|---|---|
| Typical Accuracy G | 0.01 |
| Features | 3-axis accelerometer, Motion Detection, Orientation & Tilt detection, Shock and Vibration detection |
| Temperature | |
| Typical Accuracy C | 5 |
| Features | Temperature Sensing (low accuracy), Thermal Protection |
Battery
| Overall | |
|---|---|
| Capacity mAh | 1000 |
| Pack Configuration | 1S1P |
| Voltage V | 3.7 |
| Cells | |
| Type | 603050 |
| Spec | Model: 603050 Type: Lithium Polymer Battery Nominal Voltage V: 3.7 Nominal Capacity mAh: 1000 Nominal Energy Wh: 3.7 Certifications And Tests: Standard: UN38.3 (UNITED NATIONS 'Recommendations on the TRANSPORT OF DANGEROUS GOODS' Manual of Tests and Criteria ST/SG/AC.10/11/Rev.6) Tests: Altitude Simulation: No leakage, no venting, no disassembly, no rupture & no fire Thermal Test: No leakage, no venting, no disassembly, no rupture & no fire Vibration: No leakage, no venting, no disassembly, no rupture & no fire Shock: Included as a test item in the UN38.3 report External Short Circuit: No disassembly, no rupture & no fire (Max external temperature: 57.6 ~ 57.9°C) Impact: No disassembly & no fire (Max external temperature: 106.9 ~ 129.2°C) Forced Discharge: No disassembly & no fire |
Charging
| Inputs | |
|---|---|
| Voltage Range V | 5-14 |
| Current Limit A | 0.1 to 3.25 |
| Features | |
| Fast Charge | 5-14V input with Fast Charge support |
| Configurable | Configurable draw and charge rates |
Components
| Cellular | |
|---|---|
| Manufacturer | SIMCom Wireless Solutions Limited |
| Model | SIM7000G |
| Specifications | Supported Technologies: LTE CAT-M1, LTE NB-IoT, GPRS, EDGE Frequency Bands: Gsm: Bands: 850/900/1800/1900MHz Egsm 900mhz: Transmit Frequency Mhz: 880-915 Receive Frequency Mhz: 925-960 Dcs 1800mhz: Transmit Frequency Mhz: 1710-1785 Receive Frequency Mhz: 1805-1880 Lte Cat M1: Bands: B1/B2/B3/B4/B5/B8/B12/B13/B18/B19/B20/B26/B28/B39 Lte Nb Iot: Bands: B1/B2/B3/B5/B8/B12/B13/B17/B18/B19/B20/B26/B28 Data Transfer Rates Kbps: Cat M Dl: 300 Cat M Ul: 375 Cat Nb Dl: 34 Cat Nb Ul: 66 Egprs Dl: 85.6 Egprs Ul: 85.6 Edge Dl Ul: 236.8 Gprs Dl Ul: 85.6 Supply Voltage Range V: 3.0 ~ 4.3 Power Consumption Typical: Power Off Ua: 7 Psm Ua: 9 Sleep Ma: 1 Idle Ma: 11 Temperature Range C: -40 ~ +85 Certifications: FCC, IC, CE, 3C, GCF, RoHS, REACH, RCM, PTCRB |
| Bluetooth LE | |
| Manufacturer | STMicroelectronics |
| Model | STM32WB55xx |
| Specifications | Chip Type: Multiprotocol wireless 32-bit MCU Arm®-based Cortex®-M4 with FPU Radio Features: Frequency: 2.4 GHz Bluetooth Specification: 5.4 Ieee 802 15 4 Support: Yes (supports PHY and MAC, supporting Thread 1.3 and Zigbee® 3.0) Rx Sensitivity Dbm: Bluetooth LE 1mbps: -96 Ieee 802 15 4: -100 Programmable Output Power Dbm: +6 (with 1 dB steps) Integrated Balun: Yes Data Rates Mbps: 1, 2 Dedicated Radio Cpu: Arm® 32-bit Cortex® M0+ External Pa Support: Yes Memory: Flash Memory Size: Up to 1 Mbyte Sram Size: Up to 256 Kbytes (includes 64 K SRAM1 and 64 K SRAM2 for STM32WB55Cx models) Operating Voltage V: 1.71 to 3.6 Operating Temperature C: -40 to +85 and -40 to +105 (Ambient) Power Consumption Typical Ma At 3 3v: Tx Max Output Bluetooth LE: 7.8 Tx Max Output 802 15 4: 6.5 Rx Bluetooth LE: 4.5 Rx 802 15 4: 4.5 Run Mode Flash 64mhz Typical Ma: 8.8 |
| Gnss | |
| Specifications | Gnss Systems: GPS, BeiDou, GLONASS Receiver Type: Channels: 16-channel Code: C/A Code Sensitivity: Tracking: GPS: -162 dBm GLONASS: -157 dBm BeiDou: unknown Cold Starts: -148 dBm Time To First Fix: Cold Starts: <35s Hot Starts: <1s Accuracy: Position: <2.5m CEP |
| Wifi | |
| Manufacturer | Espressif Systems |
| Model | ESP8285 |
| Specifications | Soc Description: Highly integrated Wi-Fi SoC solution for IoT industry (can perform as a standalone application or as the slave to a host MCU) Recommended Upgrade: ESP8684 Wi Fi Protocols: 802.11 b/g/n (HT20) Wi Fi Frequency Range Mhz: 2400 ~ 2483.5 Tx Power Dbm: 802 11b: +19 802 11g 6mbps: +19 802 11g 54mbps: +15 802 11n Mcs0: +19 802 11n Mcs7: +14 Rx Sensitivity Dbm: 802 11b 1mbps: -97 802 11g 54mbps: -74 802 11n Mcs7: -70 Cpu: Tensilica L106 32-bit processor (up to 160 MHz) Memory: 1 MB Operating Voltage V: 2.7 ~ 3.6 Crystal Frequency Range Mhz: 24 ~ 52 Power Consumption Deep Sleep Ua: 20 Power Consumption Active Ma: Average: 80 Tx 802 11b 19dbm: 197 Rx 802 11b: 73 Modem Sleep Typical: ~15 (DTIM3, 300ms sleep/3ms wakeup) Light Sleep Typical: ~0.9 (DTIM3, 300ms sleep/3ms wakeup) |
| Accelerometer | |
| Manufacturer | STMicroelectronics |
| Model | LIS3DHTR |
| Specifications | Device Type: MEMS digital output motion sensor: ultra-low-power high-performance 3-axis 'nano' accelerometer Data Output: 16-bit Full Scale Range: ±2g/±4g/±8g/±16g (dynamically selectable) Supply Voltage V: 1.71 to 3.6 Operating Temperature C: -40 to +85 Power Consumption Ulp Ua: down to 2 (normal mode at 1 Hz ODR) |
| Charger | |
| Manufacturer | Texas Instruments |
| Model | BQ25890H |
| Specifications | Description: I2C Controlled Single Cell 5-A Fast Charger with MaxChargeTM Technology Charge Current A: 5 (Fast charge current, adjustable from 128mA to 5056mA) Charge Efficiency Percent: At 2a: 93 At 3a: 91 Usb Otg Output V: 4.5 to 5.5 (adjustable) Usb Otg Output Current A: 2.4 Boost Efficiency Percent: 93 (at 5V, 1A output) Input Voltage Range V: 3.9 to 14 Input Current Limit A: 0.1 to 3.25 (50-mA resolution, automatically set by source detection) Battery Discharge Mosfet Resistance Mohm: 11 Battery Discharge Current A: up to 9 (peak, up to 1 sec duration) Integrated Adc For Monitoring: Voltage, Temperature, Charge Current Power Path Management: Narrow VDC (NVDC), with automatic power path selection Operating Temperature C: -40 to 85 |
Exterior
LED Indicators
The small icons above each of the indicators show what information they display.
These indicators can light up while transmitting, or as the result of a button press.
| Icon | Name | Description |
|---|---|---|
 | Battery | The current charge of the tracker with 1-4 LEDs glowing solid orange. 🟧 1 LED: 0%-25% 🟧🟧 2 LEDs: 25%-50% 🟧🟧🟧 3 LEDs: 50%-75% 🟧🟧🟧🟧 4 LEDs: 75%-100% |
 | GPS signal* | 🟧 Solid orange when operational 🟥 Solid red when GPS is unavailable It is normal for GPS to be unavailable when the tracker is indoors. |
 | GSM signal* | 🟧 Solid orange when operational 🟥 Solid red when GSM is unavailable GSM may not be available in areas with poor cell phone coverage. |
*The signal indicators are primarily for diagnostic purposes.
Buttons
The device has a single button that can be used to trigger different events.
| Trigger | Indication | Event | Details |
|---|---|---|---|
| < 1 second | Battery and status LEDs will light up | Shows you current status | |
| 1-3 second | The battery LEDs will flash from left to right in a cycle, and you will hear a small beep. | Send button press event & location | Initially sending an immediate location, followed by a more accurate location once found. |
| 15 second | The battery LEDs may go blank for a second, but then will flash from left to right in a cycle, and you will hear a small beep. | Hard reset | Recommended if you are experiencing network related performance issues |
Charging
The Zero tracker is charged using a magnetic 4 pin connector, and should be charged for 3 hours before initial use.
This connecter can be used with a magnetic cable or a zero charging dock.
| State | Indication |
|---|---|
| Disconnected | No LEDs will be on |
| Connected, Charging | Battery LEDs display the charge of the device, and will blink while charging |
| Connected, Fully charged | Battery LEDs display the charge of the device, no blinking will happen |
⚠️ Warning
It is advised to use an adapter plugged into a power socket rather than using a computer USB port or similar.