SecurityMan SM-105DB Doorbell IWATCHALARM White Type: Accessories Color: White Specifications: Battery Powered: DC 3.0V (2 x AAA battery, last up to 1 year) LED's: Red Transmission Frequency: 433 MHz Transmission Distance: 490 feet clear line of sight (no walls) Buttons: 1 Dimensions: 0.81 x 2.94 x 1.56 Package Contents: 1 x SM-105DB 1 x Manual
