The DSI ES411-K0 Door Prop Alarm is a control panel device designed to detect when a door is left ajar and sound an alarm. Manufactured by dsi, this model ES411-K0 is specifically geared towards business and industrial settings for added security and surveillance. With a focus on ensuring facility maintenance and safety, this alarm system helps businesses monitor and safeguard their premises more effectively. Ideal for those looking to enhance their alarm systems with a reliable and efficient door prop alarm.