Explore The Wireless Activity Detection Gen4
Device Overview
Introducing NCD’s Gen4 Industrial Wireless Activity Detector. Utilizing a wireless mesh networking architecture, this device offers an impressive wireless range of up to 2 miles. It incorporates a high-accuracy acceleration sensor that measures changes in acceleration to reliably detect mechanical movement (activity).
Upon detecting activity, the device immediately transmits a message to a remote gateway or modem, then returns to a sleep state for a pre-configured period. It makes extensive use of hardware interrupts to enter the lowest possible power state while sleeping, maximizing battery life. In addition to transmitting data when activity is detected, the sensor also sends regular “check-in” messages at set intervals. This ensures you always know the detector is online, fully operational, and actively monitoring.
Features:
- Industrial Grade Accelerometer with 3-axis for Activity Detection
- Configurable Activity Detection Parameters with Interrupts
- Configurable Acceleration Range ±2g to ±16g
- Configurable Interrupt Threshold
- Configurable Data Rate
- Configurable Interrupt Duration
- Customizable Interrupt Types with Combinations
- Wall-Mounted or Magnet
- Mounted IP65 Rated Enclosure
- 2 Mile Line-of-Sight Range with On-Board Antenna
- Superior LOS Range of up to 28 Miles with High-Gain Antennas
- Interface to Raspberry Pi, Microsoft® Azure®, Losant, and More
- Wireless Mesh Networking using DigiMesh®
- Open Communication Protocol for Easy Software Integration
- Power-Efficient Sleep Mode, Up to 10 Year Battery Life
Status LED
The Status LED is used to indicate errors or other sensor diagnostics.
LED blinks once – Message was sent successfully and no error in last sensor read as well in data transmission.
LED blinks twice and then one more time – Message was sent successfully but there was an error in last sensor read.
LED blinks thrice (quickly) – MCU is having issue communicating with the radio module.
Sensor Specifications
| Specifications | Minimum | Nominal | Maximum | Notes |
|---|---|---|---|---|
| Width | 3.54" | |||
| Length | 4.52" | |||
| Height | 2.16" | |||
| Enclosure Rating | IP65, NEMA 1,2,4,4X,12,13, UL-508 | |||
| Temperature Rating | -40° C | 23° C | 85° C | Component Rating |
| Tested Temperature | 0° C | 23° C | 40° C | As Tested by NCD Staff |
| Probe Operating Temperature | -40° C | 23° C | 85° C | As Tested by NCD Staff |
| Inputs | Digital, Acceleration, Magnetic, Current | |||
| Opto-input Voltage | 3.3 V | 24V | ||
| Reporting interval | 5 seconds | 600 seconds | 16777215 seconds | How often data is transmitted wirelessly |
| Range of counter values | 1 | 4294967295 | The maximum number of events the sensor can count to | |
| CT Current | 1.5% FS | FS | Minimum current read by the CT. CT range 100 to 1000Amp |
Printed Circuit Board Specifications
| Parameter | Minimum | Nominal | Maximum | Notes |
|---|---|---|---|---|
| Trace Width | 0.007 inch | 0.012 inch | 0.25 inch | Trace Width depends on the Trace Type |
| Layer Count | 2L - Rigid | Top and Bottom Layer | ||
| Material Type | FR-4 TG170 | FR-4 TG170 | FR-4 TG180 | |
| Surface Finish | ENIG 2u" | |||
| IPC Standard | IPC CLASS 2 | |||
| Finished Copper Foil | 1.0/1.0 OZ | |||
| Finished Thickness | 0.062 inc | |||
| Fine line <4.0/4.0mil | No | |||
| Blind & Burried Vias | No | |||
| Non-Conductive Resin | No | |||
| Conductive Resin | No |
Mechanical Drawing
RF Module Specifications
| Parameter | 868MHz | 900MHz | 2.4GHz |
|---|---|---|---|
| Frequency Band | 863 MHz to 870 MHz | 902 to 928 MHz | ISM 2.4 GHz |
| Transmitter Power | Up to 13 dBm ERP | Up to 24 dBm | Up to 8 dBm |
| Receiver Sensitivity | -106 dBm at 80 Kbps | -101 dBm at 200 Kbps | -103 dBm at 250 Kbps |
| Range (dense urban) | ~1000ft | ~1000ft | ~300ft |
| Range (line of sight) | ~2 miles | ~2 miles | ~1 mile |
| Data Rate | 80 Kbps | 200 Kbps | 250 Kbps |
| Networking Protocol | Digi XBee® DigiMesh® | Digi XBee® DigiMesh® | Digi XBee® DigiMesh® |
| Encryption | 128-bit AES | 128-bit AES | 128-bit |
| Reliable Packet Delivery | Retries/acknowledgements | Retries/acknowledgements | Retries/acknowledgements |
| IDs | PAN ID and addresses, cluster IDs and endpoints (optional) | PAN ID and addresses, cluster IDs and endpoints (optional) | PAN ID and addresses, cluster IDs and endpoints (optional) |
| Certification | CE/RED, ROHS Compliant | FCC (America), IC (Canada), C-Tick (Australia), Anatel (Brazil), IDA (Singapore) | FCC (America), IC (Canada), RCM (Australia), Anatel (Brazil), Teleck MIC (Japan), KCC (South Korea) |
Power Requirements and Expected Battery Life
Power Requirements
- This device is Powered by a single D-cell (LR20) battery
While changing the batteries:
- Turn off the sensor
- Only use a new D-cell battery (obtain one from NCD, as it has a built in supercapacitor, this is not a regular battery).
- Make sure to align the connector in the proper orientation (this will assure you match the polarity)
- The battery should not be replaced in fire-risky areas
- Do NOT install a rechargeable battery
Expected Battery Life
| Specifications | Minimum | Nominal | Maximum | Notes |
|---|---|---|---|---|
| Batteries size | 16000mAh | This device has a single D-Cell (LR20) battery | ||
| Battery Life 1 TPD | 10 Years | TPD Transmissions per Day | ||
| Battery Life 12 TPD | 8 Years | TPD Transmissions per Day | ||
| Battery Life 24 TPD | 5 Year | TPD Transmissions per Day | ||
| Battery Life 96 TPD | 3 Year | TPD Transmissions per Day |
Head to the NCD store if you want to purchase the Wireless Activity Detection Gen4.
If you already have the device and would like more information into its basic and advanced operations check out the Quick Start Guide and User Manual.