Can anybody guess or know ?

[milan.rajik]

Can anybody guess or know which 2.4 GHz RF modules are used in this systems transmitters and receivers ? especially in the prima and sense models.

Also are they using flow sensors in the sense model. I have ordered both prima and sense models for reverse engineering. Are they using CC2500 based RF modules ? In sense model if they are using flow sensor then how are they sending water presense info to receiver because flow sensor gives pulse and they need a MCU to convert this pulse to some kind of data for transmission. I guess they are not using any MCU in transmitters. They say the transmitters run on AA batteries (maybe two) and also solar power.

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[Hasan Malik]

I think Most possibly they would be using Zigbee wireless Modules (if 2.4 GHz used) !!!

however I didn't get any information about operating frequency of the modules , they might be using low cost RF modules available in market operating around 433 MHz.

 

[milan.rajik]

No, they can't use XBee or Zigbee because each XBee costs Rs.2000 and they are selling the product for Rs.4000. If XBee's are used they need 3 XBee's per system (two transmitters and one receiver) and cost will be more than Rs.4000. Maybe they are using C2500 based RF modules. I need cheap C2500 based RF modules. I have designed a very cheap Automatic Water Level Controller which uses 4 + 4 float switches. Mine cost Rs.2000 including 8 stainless steel float switches but Aquabrim are not giving float switches for Rs.4000. If I get a 2.4 GHz RF module for cheaper price then my system will be the cheapest.