The document is a user manual for CRT18 terminal users, which introduces the features and characteristics of the product, including positioning and monitoring functions, security precautions, communication functions, etc.
This manual begins with safety and storage precautions, warning users to keep the device away from direct sunlight, high temperatures, moisture and magnetic fields. It also details proper handling of the battery, charger and accessories.
The later sections describe the hardware interfaces, power specifications, GPS and G‑SM functions, and give detailed operating procedures such as mode switching, emergency SOS, and how to send SMS commands from a paired phone. This manual is written in Chinese.
| Operating Temperature | -20°C to 65°C |
|---|---|
| Storage Temperature | -30°C to -40°C and +80°C to +85°C |
| Humidity Range | 59%–96% |
| Standby Power Consumption | 48 nA |
| Input Voltage | 110–220 V AC |
Store the device away from direct sunlight, high temperature, strong magnetic fields, moisture and water, and avoid placing it on uneven surfaces.
Press the mode (interface) button located on the lower left side of the device to toggle between modes; the manual provides a diagram of the five connectors.
The device consumes 48 nA in standby mode.