I am trying to do the prototype using NodeMCU and Blynk to create a remote site alarm monitoring system. Once I am success, it may applied on more than 100 sites.
Each project (i.e. each site) requires around 2,500 energy packs, however, the maximum packs I could purchase on the Apps shown is 28,000 packs, means around 11 sites could be used.
- Could I purchase 2nd 28,000 packs after I bought 1st?
- Could I have a receipt after purchasing, as I need to claim from company?