I’m trying to set up a security system in my parents back garden. They have a long fence at the back that they wish to alarm.
I thought about using a series of these or similar
http://www.amazon.co.uk/gp/product/B005GT3NWC/ref=s9_simh_gw_p60_d1_i2?pf_rd_m=A3P5ROKL5A1OLE&pf_rd_s=center-3&pf_rd_r=08YCSKRYGW7RARXSHWEE&pf_rd_t=101&pf_rd_p=430257267&pf_rd_i=468294
I’m ideally looking for wireless modules though that I can tether to some sort of sounder that can be placed inside. Only has to be a simple unit. Any suggestions? Is there a standard protocall that security devise transmit on or is it a pain matching receivers to transmitters?