Key Features & Benefits - Wireless connect-and-play system - No cables, extra safe and versatile - 95m wireless range from transmitter to receiver - Hygienic, antibacterial easy-clean material - Dimensions: 25 x 76cm (10 x 30") - System includes: 1x Bed Alertamat and 1x Wireless Transmitter (must be used with Alerta Wall Point Receiver - sold separately) Alerta Wireless Transmitter - Battery powered - 0, 2 or 4 second delay to reduce false alarms - Takes 2x 1.5v AAA batteries Alerta Wall Point Receiver - High, low and silent volume control - Low battery alert - battery powered