LAT and LON Commands - Manual Coordinates

Allow manual configuration of the device’s GPS coordinates, useful for equipment in fixed locations.

What is it for?

🏠 Fixed equipment — Home alarms, industrial sensors, monitoring equipment
🚫 No GPS signal — Tunnels, mines, basements, underground installations
🔋 Power saving — Avoid GPS module consumption when not necessary
📍 Known position — Devices in permanent and predefined locations

Command Summary

Command	Function	Range
`SLAT<value>`	Configure latitude	-90.0° to +90.0°
`SLON<value>`	Configure longitude	-180.0° to +180.0°
`QLAT`	Query latitude	—
`QLON`	Query longitude	—

Parameters

Latitude (SLAT)

Value	Hemisphere
Positive (+)	North
Negative (-)	South

Longitude (SLON)

Value	Hemisphere
Positive (+)	East
Negative (-)	West

Coordinates must be entered in decimal format, not in degrees/minutes/seconds. Example: -27.78089 instead of 27°46'51"S.

Typical Use Cases

Case	Description
🏭 Industrial equipment	Sensors in production plants
🏠 Home alarms	Residential security systems
🚇 Underground installations	Tunnels, parking garages, mines
📡 Monitoring stations	Weather or environmental equipment

Examples

Configure complete location


>SLAT-26.82414<
// Configure latitude: 26.82414° South
 
>SLON-65.20619<
// Configure longitude: 65.20619° West

Verify configuration


>QLAT<
// Response: RLAT-26.82414
 
>QLON<
// Response: RLON-65.20619

Location in northern/eastern hemisphere


>SLAT40.71278<
// Latitude: 40.71278° North (e.g.: New York)
 
>SLON-74.00594<
// Longitude: 74.00594° West

Manually configured coordinates are retained after device restart. If the equipment has active GPS, the manual position may be overwritten by the real position.

Compatibility

💾Firmware v1.03.00

SPLegacy

ULLegacy

MTLegacy

💾Firmware v1.00.00

SP-IOT

SM-IOT

ZE-IOT