With Knock Sensor, a bright flashing light will alert you when someone knocks at your door. Sensitive to vibrations only, the Knock Sensor will not pick up other outside noise. Light will automatically shut off after five seconds. Metal clip on door bracket (as shown) sold separately.

Product Features:

• Does not send a signal other than a bright flashing strobe. You must be in line-of-sight to see it.
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• Bright strobe light requires one 9 volt alkaline battery (not included).
The system has a two-position sensitivity setting and will not pick up outside sounds.
• Attaches to the inside of any door with a self-adhesive velcro strip (included).
• Dimensions: 5"(h) x 3" (w) x 1.25" (d)
• Strobe: 2" x 1.5" x .75"
• One year warranty

The Silent Call Bed Vibrator can be used in conjunction with the following products for continual 24 hour notification at night while you are sleeping.

1. Sleep/Alert Charger
2. Sidekick Receiver
3. Lamp Lighter Receiver
4. Crystal Refelctions Receiver

5 year Limited Warranty

The Silent Call Bed Vibrator with transformer is compatible with a variety of clocks on the market, including the Sonic Boom SB1000, the EZset Alarm clock and any clock that has a 2 prong plug for plugging in a table lamp.

5 year Limited Warranty