PX-Gateway

The PX-Gateway is the gateway device that collects data from all nearby sensors and transmits it to the PrecastX Cloud.

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Specifications

Parameter	Value
Communication
Sensor Protocol	ESP-NOW
Sensor Capacity	Up to 20 simultaneous
Sensor Range	100m indoor / 300m outdoor
Cloud Connection	WiFi 2.4GHz or 4G LTE
Bluetooth	BLE 5.0 (for configuration)
Data
Local Buffer	7 days of data
Upload Interval	Real-time (configurable)
Power
Input	USB-C 5V/2A or 12-24V DC
Consumption	2W typical
Battery Backup	4 hours (internal)
Physical
Dimensions	150 × 100 × 45 mm
Weight	280g
Enclosure	ABS plastic, IP54
Operating Temp	-20°C to +50°C
Mounting	Wall mount or DIN rail

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Initial Setup

1. Power On

Connect the 12V DC adapter or USB-C power cable. The device boots automatically. During cellular registration the firmware shows LED 1 orange blinking; MQTT setup then uses LED 1 cyan breathing until the cloud session is up.

2. Connect via Mobile App

1. Open PrecastX app → Devices tab
2. Tap on the gateway in the "Nearby" section
3. Follow the on-screen WiFi configuration wizard

3. Configure WiFi

Enter your facility's WiFi credentials:

• Network name (SSID)
• Password
• The gateway will test connectivity and confirm

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LED Indicators

These are the LED states that matter in normal use:

LED	Color	Pattern	Meaning
LED 1	🔴	Fast blink	Cellular connection lost
LED 1	⚪	Solid (dim)	Gateway is powered on and idle
LED 2	🟠	Breathing	Backup battery is charging
LED 2	🟢	Solid	Backup battery is fully charged
LED 3	🔵	Solid	Connected to the mobile app over Bluetooth
All LEDs	🟠	Blinking	Shutdown pending; release the power button to turn the gateway off

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Deployment Guidelines

Placement

• Mount at a central location within your facility
• Elevate at least 2m from ground for best range
• Avoid placement inside metal enclosures
• Keep away from large metal structures that block radio signals

Range Considerations

Environment	Typical Range
Open outdoor	300m
Warehouse (high ceiling)	150m
Indoor with walls	100m
Through concrete walls	30-50m

Multiple gateways

For large facilities, deploy multiple gateways:

• Each covers a zone of your facility
• Sensors automatically connect to the strongest signal
• All data aggregates in the cloud seamlessly

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Network Configuration

Firewall Requirements

Ensure the following outbound connections are allowed:

Service	Protocol	Port	Domain
MQTT	TLS	8883	mqtt.precastx.com
HTTPS	TLS	443	api.precastx.com

Static IP (Optional)

If your network requires static IP configuration, use the Mobile App:

1. Connect to gateway via Bluetooth
2. Go to Settings → Network → Advanced
3. Toggle off "DHCP" and enter IP settings

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Offline Operation

If internet connectivity is lost:

• Data continues to be collected from sensors
• Up to 7 days of data is stored locally
• When connectivity returns, buffered data is uploaded automatically
• LED 1 shows cyan breathing while the MQTT client reconnects, and fast red blinking on LED 1 if the cellular modem loses its bearer entirely

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Maintenance

Firmware Updates

Updates are delivered automatically over-the-air when connected to the internet. You'll see a notification in the Web Dashboard when updates are applied.

Factory Reset

If needed, reset to factory defaults:

1. Power off the device
2. Press and hold the power button
3. While holding, reconnect power
4. Continue holding for 10 seconds
5. LED will flash rapidly, then device reboots