by Silent Call

• Signals environmental sounds such as a baby's cry, doorbell, phone, or other audio signals
• Sound Monitor will ignore sudden loud sounds like a hand clap or door slam. Volume sensitivity is adjustable to help filter out constant background noises
• Sends a signal to any compatible Silent Call Receiver 80 to 100 feet away
• Runs on 2 AAA alkaline batteries (included)
• 4" x 2.25" x .75"
• Five year warranty