Device Manual of Discovery 2G Plus: Difference between revisions

Latest revision as of 06:07, 17 November 2025

Discovery 2G RS232 is a tracking terminal with GNSS and GSM connectivity, capable of collecting device coordinates and transmitting them via the GSM network to a server. It is ideal for applications requiring remote object tracking.

Package Contents

Discovery 2G RS232 device
Input/output power cable with 2x6 connection pins
3.7V 350 mAh rechargeable Li-PO battery

Basic Characteristics

GSM / GPRS / GNSS Features

Technology: 2G (GSM/GPRS), GNSS
SMS (text) support
Integrated GNSS receiver
Sensitivity: up to -149 dBm

Cellular

Frequency Bands: Quad-band GSM850, EGSM900, DCS1800, PCS1900

Transmit Power

Class 4 (2W) at GSM850 and EGSM900
Class 1 (1W) at DCS1800 and PCS1900

Hardware Features

Built-in movement sensor
Internal High Gain GNSS and GSM antennas
Internal flash memory 4MB (32,768 records)
350 mAh Li-Po rechargeable 3.7V battery

Interface Features

Power Supply: +9V to +90V DC
Digital Inputs: 2 (DIN1, DIN2)
Analog Inputs: 2 (multiplexed with digital inputs)
Digital Outputs: 2 (DO1, DO2) for external relays, LEDs, buzzers
1-Wire Interface: Supports temperature sensors
Status Indicators: 4 LEDs (GNSS, Network, Power, User)

Special Features

Fast GNSS fix (outdoor)
Reliable tracking in urban environments
Compact and rugged design
Real-time tracking
Smart data acquisition based on:
- Time, Speed, Distance, Ignition or I/O events
Data transmission via GPRS
Configurable via secured SMS
1x Micro SIM \ eSIM
Overvoltage protection: YES

Electrical Specifications

Description	Voltage	Duration
Normal operation	+9 to +90 V	Unlimited
Protection activates, device off	90 V	Unlimited
Maximum voltage	< 90 V	Unlimited

Technical Details

Battery charge current: Avg. 140 mA
Operating temp (without battery): -40°C to +85°C
Storage temp (without battery): -40°C to +80°C
Operating temp (with battery): -20°C to +70°C
Storage temp (with battery): -20°C to +40°C
Humidity: 5% to 95% non-condensing
Ingress Protection: IP54
Weight (device + battery): 60 g
Resettable fuse: 3A, 100V

Mechanical

Dimensions: 85mm x 66mm x 20mm (L × W × H)
Enclosure: Polycarbonate

LED Indications

Function	Indicator
GNSS	LED (Orange)
Network	LED (Green)
Power	LED (Red)
User Status	LED (Red)

Internal Battery Specifications

Property	Value
Type	Li-Po rechargeable battery
Voltage	3.75 – 4.2 V
Capacity	350 mAh
Power	0.64 – 0.66 Wh
Charge Temp	0°C to +45°C
Discharge Temp	-20°C to +60°C
Storage Temp	-20°C to +45°C (15 days); -20°C to +35°C (90 days)

⚠️ CAUTION: RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.

Do not discard batteries in household waste. Use recycling bins or drop-off centers.

Electrical Characteristics

Parameter	Min.	Typ.	Max.	Unit
Supply Voltage	+9	–	+90	V
Digital Output Voltage (DO1, DO2)	10	–	60	V
Drain Current (DO1, DO2 OFF)	–	–	120	mA
Input Resistance (DIN2)	–	2.2K	–	Ω
Input Voltage Threshold (DIN1–2)	90	–	–	V
Analog Inputs
Voltage Range	0	–	+90	V
Resistance	–	2.2K	–	Ω
Measurement Error	–	–	2	%
1-Wire Interface
Output Voltage	–	4.5	–	V

Other Features

Remote reset via SMS/GPRS
Supports 2 IPs simultaneously
Firmware Over-The-Air (FOTA)
Geo-fence (Circular/polygonal)
Protocols: TCP/IP, HTTP, SMS, MQTT
Memory: up to 32,768 positional logs
SMS fallback if GPRS unavailable
Backup battery runtime: 1 hour
SIM support: 1x Micro SIM / eSIM
Alerts: battery disconnection/reconnection, over-speed, ignition, geo-fence, tilt, low battery
External battery voltage monitoring
Optional interfaces: 1-Wire, RS232, Immobilizer/Buzzer

Absolute Maximum Ratings

Parameter	Min.	Typ.	Max.	Unit
Supply Voltage	+9	–	+90	V
Drain-Source Clamp Threshold	–	–	+60	V
Digital Input Voltage	–	–	+90	V
Analog Input Voltage	0	–	+90	V

⚠️ Note: Analog input error margin may increase with temperature variation.

@@ Line 48: / Line 48: @@
 == Electrical Specifications ==
-{| class="wikitable"
+{| class="wikitable" style="width:100%"
 ! style="background-color:#680022; color:white;" | Description
 ! style="background-color:#680022; color:white;" | Voltage
@@ Line 76: / Line 76: @@
 === LED Indications ===
-{| class="wikitable"
+{| class="wikitable" style="width:100%;
 ! style="background-color:#680022; color:white;" | Function
 ! style="background-color:#680022; color:white;" | Indicator
 |-
-| GNSS || LED (Orange)
+| <div style="color: orange; font-weight: bold;"> GNSS </div>|| <div style="color: orange; font-weight: bold;">  LED (Orange) </div>
 |-
-| Network|| LED (Green)
+| <div style="color: green; font-weight: bold;"> Network </div>|| <div style="color: green; font-weight: bold;"> LED (Green)</div>
 |-
-| Power || LED (Red)
+| <div style="color: red; font-weight: bold;"> Power</div> ||<div style="color: red; font-weight: bold;">  LED (Red) </div>
 |-
-| User Status || LED (Red)
+| <div style="color: red; font-weight: bold;"> User Status </div> ||<div style="color: red; font-weight: bold;"> LED (Red)</div>
 |}
 == Internal Battery Specifications ==
-{| class="wikitable"
+{| class="wikitable" style="width:100%"
 ! style="background-color:#680022; color:white;" | Property
 ! style="background-color:#680022; color:white;" | Value
@@ Line 113: / Line 113: @@
 == Electrical Characteristics ==
-{| class="wikitable"
+{| class="wikitable" style="width:100%"
 ! style="background-color:#680022; color:white;" | Parameter
 ! style="background-color:#680022; color:white;" | Min.
@@ Line 148: / Line 148: @@
 * Firmware Over-The-Air (FOTA)
 * Geo-fence (Circular/polygonal)
-* Protocols: TCP/IP, HTTP, SMS
+* Protocols: TCP/IP, HTTP, SMS, MQTT
 * Memory: up to 32,768 positional logs
 * SMS fallback if GPRS unavailable
@@ Line 158: / Line 158: @@
 == Absolute Maximum Ratings ==
-{| class="wikitable"
+{| class="wikitable" style="width:100%"
 ! style="background-color:#680022; color:white;" | Parameter
 ! style="background-color:#680022; color:white;" | Min.