Lengthy-range wi-fi sensor modules are utilized in many purposes, together with asset monitoring techniques, neighborhood constructing safety, robotic wi-fi management, industrial distant management, telemetering, automated information acquisition, car keyless entry system, PC wi-fi networking, toys, and drones amongst others.

One such sensor is the nRF24L01 module (refer Fig. 1) from Nordic Semiconductor. For utility, it’s possible you’ll confer with ‘Extremely-Low-Energy Sensor Hub Utilizing nRF24L01 Modules’ DIY article obtainable on this link.

Some long-range wi-fi sensor modules simply obtainable within the Indian market embrace nRF24L01, Zigbee XBee Professional S2C 802.15.4, HC-12, TS835 FPV 5.8G, and LoRa SX1278 module.

  1. nRF24L01 module. Its working vary is as much as one kilometre and it makes use of 2.4GHz international open ISM band.
  2. Zigbee XBee Professional S2C 802.15.4 module. Its vary for outside line-of-sight is as much as 3.2km. The working frequency is 2.4GHz for worldwide deployment.
  3. HC-12 wi-fi serial port communication module. It has a spread of as much as one kilometre in open house. It really works within the frequency vary of 433.4-473.0MHz and helps as much as 100 communication channels.
  4. TS835 FPV 5.8G 600MW 48CH (2-6S) wi-fi AV transmitter module. It has a spread of 5km to 8km when used with a much bigger acquire antenna. The working frequency is 5.8GHz.
  5. LoRa SX1278 long-range RF wi-fi energy psychological module. It has a spread of as much as 5km. This module makes use of SX1278 IC from SEMTECH and works on 433MHz frequency.
nRF24L01 module
Fig. 2: nRF24L01 module

There’s additionally a long-range wi-fi module, the F8L10 sequence, which may work as much as 11km.