RevHostGPS

RH502

LTE OBD-II GNSS Tracker

User Manual V1.0

1. Overview

1.1 Appearance

RH502 device with the OBD-II connector, Micro USB port, Nano SIM slot, and the power, GNSS, and network indicators labeled — RH502 appearance — connectors and status indicators

1.2 Pinout

OBD-II connector pin numbering diagram for the RH502 showing pins 4, 5, 6, 7, 10, 14, 15, and 16 — OBD-II connector pin positions

RH502 pin definitions
Pin Number	Pin Name	Description
4	GND(-)	Ground
5	GND(-)	Ground
6	CAN_H	CAN high
7	K-Line	—
14	CAN_L	CAN low
15	L-Line	—
16	VCC (9-36V DC+)	Power supply (9–36 V DC)

1.3 Status LED Indication

Power indicator (red)
Power Indicator (Red)	Meaning
Fast blink (0.1s–0.1s on/off)	The battery is low.
Slow blink (2s–2s on/off)	The device is charging.
Solid on	The charging is complete.
Slow blink (0.1s–2s on/off)	The device operates correctly.
Off	The battery is under voltage or encounters an internal failure.

GNSS indicator (blue)
GNSS Indicator (Blue)	Meaning
Fast blink (0.3s–0.3s on/off)	The device is searching for satellite signals.
Solid on	The GNSS module has already fixed a position.
Off	The device is in sleep mode or not operating.

Network indicator (green)
Network Indicator (Green)	Meaning
Fast blink (0.3s–0.3s on/off)	The cellular modem is initializing.
Slow blink (0.1s–2s on/off)	The cellular network works correctly.
Solid on	The device is in a call/online.
Off	Network error.

2. Installation

2.1 Ready to Use — Preinstalled SIM Card

Your RH502 comes ready to use. It ships with a preinstalled SIM card and is already provisioned to connect to the RevHostHQ platform — there is nothing to insert or configure.

Do not remove or replace the SIM card

The device works only with the preinstalled SIM card. Removing or replacing it will take the device offline and it won't work. If you believe there is a connectivity issue, contact us through the support page instead.

2.2 Installing the Device

Connect the device to the vehicle: find the OBD-II connector in your vehicle. The figure below shows the most common OBD-II connector locations.

Illustration of a vehicle dashboard highlighting common OBD-II connector locations under the steering column and around the center console — Common OBD-II connector locations

Note

Once the device is plugged in and online, finish activation in RevHostHQ — see Set up your RevHostGPS device.

3. Default Settings

The RH502 ships fully configured for the RevHostHQ platform. No APN, server, or SMS configuration is needed — plug it in and it reports automatically. The default behavior is described below.

Movement and ignition detection:

Vehicle movement will be detected by the accelerometer.
Ignition will be detected by vehicle power voltage (between 9–36 V).

The device sends an alert notification to RevHostHQ if any of these events happen:

The vehicle keeps moving at speeds above the threshold for a preset duration.
The driver steps on the brake or gas pedal hard, or corners rapidly.
The device is plugged or unplugged from the OBD-II connector.

4. Features & Specifications

4.1 Features

Communication via 4G LTE networks. Two complementary positioning systems ensure locations are accurately displayed in RevHostHQ.
Obtains real vehicle data (accurate mileage, fault code, ACC status, fuel consumption statistics, battery voltage, engine speed, etc.).
Get instant alerts for 4 kinds of dangerous driving behavior, depending on your needs.
Instant alerts for atypical events such as car fault, collision, overspeed, device pull-out, engine idling, low battery, geo-fence entry/exit, etc.
Through Bluetooth connection you can configure parameters, upgrade software, and debug.
Ensures constant tracking in areas with poor GPS signal — or even without it.
Simply plug this device into the OBD-II socket — you don't have to turn to professionals.

4.2 Basic Characteristics

GNSS

Positioning system	GPS/BDS
Frequency	L1
Positioning accuracy	<8.2 ft (2.5 m) CEP
Track sensitivity	-162 dBm
Acquisition sensitivity	-148 dBm (cold) / -156 dBm (hot)
TTFF (open sky)	Avg. hot start <1s · Avg. cold start ≤ 32s

Cellular

Communication network	LTE Cat M1&NB
Frequency	Cat M1: B2/B4/B5/B12/B13 · Cat NB2: B2/B4/B5/B12/B13

Power

Battery	160mAh/3.7V
Input voltage	9-36VDC

OBD Interface

Data	K-Line, CAN Bus Data
Data reading	Allow information to be read from OBD-II port (supports OBD protocols): ISO 9141-2 (5 baud init, 10.4 kbaud) ISO 14230-4 KWP (5 baud init, 10.4 kbaud) ISO 14230-4 KWP (fast init, 10.4 kbaud) ISO 15765-4 CAN (11 bit ID, 250 kbaud) ISO 15765-4 CAN (11 bit ID, 500 kbaud) ISO 15765-4 CAN (29 bit ID, 250 kbaud) ISO 15765-4 CAN (29 bit ID, 500 kbaud) SAE J1939 CAN (29 bit ID, 250 kbaud) SAE J1939 CAN (29 bit ID, 500 kbaud)

Data

K-Line, CAN Bus Data

Data reading

Allow information to be read from OBD-II port (supports OBD protocols): ISO 9141-2 (5 baud init, 10.4 kbaud) ISO 14230-4 KWP (5 baud init, 10.4 kbaud) ISO 14230-4 KWP (fast init, 10.4 kbaud) ISO 15765-4 CAN (11 bit ID, 250 kbaud) ISO 15765-4 CAN (11 bit ID, 500 kbaud) ISO 15765-4 CAN (29 bit ID, 250 kbaud) ISO 15765-4 CAN (29 bit ID, 500 kbaud) SAE J1939 CAN (29 bit ID, 250 kbaud) SAE J1939 CAN (29 bit ID, 500 kbaud)

Interface

Connection	OBD II socket
GNSS antenna	Internal High Gain
GSM antenna	Internal High Gain
USB	2.0 Micro-USB
LED indication	3 status LED lights
SIM	Nano-SIM
Data storage	4+4MB

Physical Specification

Dimensions	2.6(L) × 2.0(W) × 1.0(H) in (65 × 50 × 25 mm)
Weight	2.3 oz (65 g)

Operating Environment

Operating temperature	-4 °F to 158 °F (-20 °C to 70 °C)
Operating humidity	5%–95%, non-condensing

Feature

Sensors	Accelerometer
BLE	Support BLE 4.0 protocol
Ignition detection	External power voltage, accelerometer, engine RPM
Scenarios	Vehicle movement alert, overspeed alert, geo-fence, vehicle battery detection, power supply disconnection
Driving behavior analysis	Harsh acceleration, harsh braking, harsh cornering, collision
Fuel monitoring	OBD II

5. Precautions About Battery

Please use batteries that are specified by the manufacturer of the device. The manufacturer will assume no repair liabilities for damages resulting from the use of non-original accessories.

Avoid metal objects as they may cause short circuits on battery contacts.
Do not bend or forcibly open the battery.
Do not soak the battery in water or expose it to fire.
It is forbidden to use batteries that are deformed, discolored, spilled, or package-damaged.
It is forbidden to disassemble or modify the battery.

6. Warranty Instructions & Service

6.1 Special Note

No prior notice will be given if the product is upgraded due to technological reasons.
The appearance or color of the product is subject to the actual device.
The warranty applies to the services of repair, replacement, and refund of the product with the following IMEI.
Please keep your proof of purchase in a safe place, as it will be needed at the time of service.

6.2 Warranty Terms

For damages not caused by human factors, this warranty lasts for one year starting from the date of purchase. You can choose to pay for the repair services in any of the following cases:

The warranty period expires;
No warranty record or valid proof of purchase;
The product, including its accessories, is not in the warranty period;
Quality issues resulted from unauthorized repair, crash, liquid spillage, accident, modification, or incorrect voltage input; or the IMEI or counterfeit mark of the device is broken or scribbled;
Damage caused by installing or using the device without following the instructions in this user manual;
The warranty does not cover damage resulting from soaking in liquid;
The product model is inconsistent with the warranty record;
Damage caused by force majeure such as fire, flood, or lightning.

6.3 Note

For vehicle trackers, the warranty lasts for 1 (one) year from the date of purchase. The specific terms are:

A full replacement, including accessories, if the product is found defective during the unpacking check (that is, the device has neither been installed nor used);
If a defect occurs within one year after installation: replace only the mainboard if the housing is intact and doesn't affect normal use; or replace the housing and the mainboard if the housing is defective and affects normal use (man-made damage voids the replacement service for the housing);
Free repair services will be given to the product if a defect is found during the first year under proper use.