Recent content by wild_riverz

thanks for the feedback. i agree with your comments, there r no waiters at this cafe though. I was wondering if there are sensors that work in different ways to passive infra red- for example ultrasonic, .... how ever i think in the end staff will have to use a switches behind the counter...

Hi. The owner of a cafe has asked me to install heaters above tables that are placed outside the cafe on the sidewalk. There is a roof over the tables where the sensors can be located about 12 feet of the ground. He wants the heaters to come on when people sit at the tables - what sensors should...