nrfl2041, WIFI, bluetooth, xbee, zwave, other wireless communications Have a project using up to 200 sensors. communication method needs to be wireless. Sensors need to communicate data to the cloud or to a local storage device. Data is transmitted 6 to 24 times per day only. Data size is less than 1KB per sensor in most cases. Transmission distance is less than 150' in most cases. Transmitted data described here is digital, but might be analog if needed. Cost is a big issue. Power consumption is also a big issue but less important than cost. What method would you use nrfl2041, WIFI, bluetooth, xbee, zwave, or other wireless communications method? Love to hear your opinion.
Nrf24l01 with mesh or star setup is the best sollution for you. Other modules are expensive. Also bluetooth doesnt support over 7 nodes.  you can solder 8cm wire to nrf modules to get better signal and increse range. Alternatively you can use "nodemcu". Xbee-zigbee has hibernate function to increse battery life. You can apply enable-disable technique to improve the battery life but it is not preffered beacause of network performance. it is diffucult to assign addresses, setup network topology, and establish routing tablet for every hibernation period. You can choose cheaeper zigbee modules like microchips mrf24j40ma.