The best place for security information!
As an advanced version of STI’s popular electronic watchdog, the STI Rex Plus II offers a versatile way to deter intruders, receive visitor chime alerts, or trigger a siren upon motion detection. Rex Plus II can sense motion through thick doors, walls or glass. When motion is detected, the device sounds one of eight selectable alerts, including an angry, barking watchdog to scare off burglars. Read More »