(VAT excluded)
In stock
Production ready
Product design is finalized. Bill of Materials is finalized. An initial important batch of products to make the SKU commercially available is required, meaning no inventories are currently available and lead time is in months. All final certifications are not obtained yet but pre-testing has been operated and seller is 100% sure to obtain them. Datasheet and user guide should already be available.

Key features highlights :

  • LoRAWAN v1.0 class A compliant
  • 2 section 3V CR2450 button battery powered
  • Report voltage status, window/door status
  • Easy set up and installation 
  • Low power consumption
  • Warning for low battery indication
  • Programmable Alive signal

Electric Parameters

Input power 2pcs 3.0V CR2450 button battery

Working power  DC +2.2V3.0V

Standby current 13uA/3.0V

Transmitting current (max) 120mA/3.0V

Receiving current (max) 11mA/3.0V


Frequency Parameters

Frequency range 410-525MHz


TX power   19dBmTypical

Rx sensitivity    -121dBm

(Frequency deviation=5kHz,Bit Rate=1.2kb/s)

Antenna type Build-in antenna

Communication rang   2kmTypical

Data transfer rate  1.2300kbps

Spread technique FSK/OOK


Physical Parameters

Main Body Dimension 57mm x 35mm x 15mm 

Sensor Dimension 43mm x 13mm x 12mm

Humidity <95%RH

Working Temp.  -10°~ 50°C

Storage Temp. -40°~ 85°C

Description :

Home home sweet home.  Doors and windows, often unsecured. Protecting them is a definite priority when it comes to securing your home. In addition to a reliable lock system, R311A are an essential part of any basic home security system package, preventing entry and potential danger to your home and family.

R311A is a magnetic contact sensors available to detect opening or closure of doors and windows. The radio transmission is based on the new disruptive LoRa long range technology which we can support US915/AS923. R311A will transmit information and data to the server from openings and closings of doors, windows, gates etc based on the desired behavior. The low battery consumption device is long lasting which ensures optimum usage. 

The home is the nest where you love to come back. Its your own part of the world: you close the door and everything else stays outside. But to make sure the door is fully closed, the Internet of Things can helps you with the specific wireless sensors.

These sensors monitor the opening and the closure of windows and doors. Thanks to small sizes, they can be installed everywhere. They are wireless so they take up minimal floor space.The transmission is direct to a central center that can be programmed to trigger an alarm system.Thanks to innovation, these wireless sensors are more reliable and precise and they can detect several applications. 

When the window is opened, R311A sends alarm message to the control center. R311A utilizes the latest ultra-low power consumption technology and requires no wiring. 

It requires just button batteries to support its operation. The communication method meets LoRa protocol standard.

Specifications :
Seller netvox
Manufacturer Name NETVOX
SKU 114-1469
Manufacturer Part Number R311A
RF Region AS923 - Asia 915-928MHz
LoRa Class Class A
Solution Represented Home
RF Power (dBm) 19dBm
Antenna Integrated
RF transceiver SX1276
Depth (cm) 1.5
Width (cm) 3.5
Height (cm) 5.7
Technical Documents

Seller conditions Seller commercial condition
Seller shipping condition
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