Netvox’s wireless dual input dry contact sensors can be used to detect contact between two points for example if a door hasn’t been fully closed. The sensor periodically sends an alert message via the LoRaWAN protocol to determine the status of the contacts.

Features:
- Wireless range of up to 10km (depending on environment)
- LoRaWAN Class A compatible
- Frequency Hopping Spread Spectrum (FHSS)
- Improved interference immunity
- Improved power management for longer battery life
- Encrypt-RF Security (Diffie-Hellman Key Exchange + AES-128 CBC for sensor data messages)
- Battery Life of up to 10 Years (determined by sensor reporting frequency and other variables)
- Over-the-air updates (future)
- Third-Party online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email (optional)

Parameters

Electric:
- Input Power: 2 x 3.6V ER14505 AA lithium batteries (3.6V2400mah/section)
- Sleeping Mode: 22uA
- Wake Up Mode: 6.3mA/3.3V
- Receiving Current (Max): 11mA/3.3V
- Transmitting Current (Max): 120mA/3.3V
- Battery Voltage Measurement Accuracy: ±0.1V
- Low Voltage Threshold: 3.2V

Frequency:
TX Power: 19dBm±1dBm
Rx Sensitivity: -136dBm (LoRa, Spreading Factor=12, Bit Rate=293bps) -121dBm (FSK, Frequency deviation=5kHz, Bit Rate=1.2kbps)
Antenna Type: Built-In Antenna
Communication Range: 10 km (line-of-sight, actual transmission distance depends on the environment)
Data Transfer Rate: 0.3kbps～50kbps
Spread Technique: LoRa/FSK
Available Frequency: EU868 (others are available on request)

Physical:
- Dimensions: Main Part: 112mm x 65mm x 32mm
- Weight: 141g
- Environment Temperature Range: -20℃ ～ 55℃
- Environment Humidity Range: <90% RH (No condensation)
- Storage Temperature: -40℃ ～ 85℃