Mine's an Apeman (?)H55. Apparently invisible at night - some brands/models show some visible light.
Thanks.Sorry, yes. A mate had a cheap one which was noticeable to the targets. He wasn't 100% sure until he upgraded (for better quality) and saw that when the old one was triggered, the subjects were spooked by it - their reactions were caught by the upgrade (which was completely ignored.) Most of the regular visitors soon learned that the strange glowy thing wasn't a threat but they still reacted to it.