Device Overview
NCD’s new C1D2-certified long-range wireless door open/closed detection sensors set an industry-first standard for IoT devices designed for hazardous environments. With C1D2 Group A, B, C, and D certification, these sensors are ideal for locations with explosive gases, dust, fibers, or flammable vapors, such as chemical plants, oil refineries, paint shops, mills, silos, and mining facilities. They support hazardous substances including Acetylene, Hydrogen, Ether, and Propane.
The sensor minimizes power usage by sleeping between transmissions and wakes every 15 minutes—or when a door or window state changes—to send updates. This design enables up to 10 years of battery life, depending on conditions and transmission intervals.
The sensor acts as a wireless push notification transmitter, detecting door/window states via a magnetic switch and sending alerts for open or closed conditions. With up to two detection probes on a 4.5-meter cable, it’s perfect for security applications requiring reliable, long-range communication. Alerts are sent when magnets move into or out of proximity with the sensors, making it ideal for monitoring doors, windows, gates, and other critical areas.
NCD offers a complete ecosystem of C1D2-certified long-range wireless sensors with open protocols for seamless software integration. Use an NCD Gateway with Node-RED to decode transmissions and connect to platforms like AWS®, Microsoft Azure®, or your own MQTT broker. The system ensures secure, private data handling while allowing integration with virtually any cloud platform.
Feature
- C1D2 Certified Vibration Sensor for Hazardous Locations
- Group A, B, C, and D Certification
- Industrial Long Range Wireless Door Sensor
- Detect Input State of up to Two Magnetic Door Sensors
- One or Two Inputs with Included Magnetic Door Sensors
- IP65 Box Ideal for Indoor or Outdoor Applications
- Encrypted Communication, 1000 ft indoor wireless range, approximately 2 miles in line of sight environments with onboard antenna
- Supports Wireless Mesh Networking
- Open Communication Protocol for Easy Software Integration,
- NO Monthly Fee or Locked Proprietary Protocols, Open Node-RED library for ease of configuration and data processing
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 – MCU is having issue communicating with the radio module.
Sensor Specifications
| Specifications | Minimum | Nominal | Maximum | Notes |
|---|---|---|---|---|
| Width | 3.56" | |||
| Length | 4.52" | |||
| Height | 2.16" | |||
| Enclosure Rating | IP65, NEMA 1,2,4,4X,12,13, UL-508 | |||
| Mounting | 1/4 NPT 1/4-28 UNF Magnet Mount | |||
| Temperature Rating | -40° C | 23° C | 85° C | Component Rating |
| Tested Temperature | 0° C | 23° C | 40° C | As Tested by NCD Staff |
| Probe Temperature | -40° C | 23° C | 105° C | As Tested by NCD Staff |
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 Sensor is battery powered
Powered by AA batteries (NCD recommends Energizer L91 batteries).
While changing the batteries:
- Turn off the sensor
- Only use new L91 batteries
- Checkout the polarity marking on the battery holder and batteries
- Replace all six batteries with new L91 batteries. Do not mix old and new batteries
- Batteries should not be replaced in fire-risky areas
- Do NOT install rechargeable batteries
Expected Battery Life
| Specifications | Minimum | Nominal | Maximum | Notes |
|---|---|---|---|---|
| Batteries | 2 | 6 | 6 | May be Powered by 2 or 6 AA Batteries |
| Battery Life 1 TPD (TPD Transmissions per Day) | 10 Years | Battery estimation is based on a 30 min interval | ||
| Battery Life 12 TPD (TPD Transmissions per Day) | 8 Years | Battery estimation is based on a 30 min interval | ||
| Battery Life 24 TPD (TPD Transmissions per Day) | 5 Year | Battery estimation is based on a 30 min interval | ||
| Battery Life 96 TPD (TPD Transmissions per Day) | 3 Year | Battery estimation is based on a 30 min interval |
Head to the NCD store if you want to purchase the
C1D2 Industrial IoT Wireless Door Open Closed Sensor.
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.