The Sonic Alert , DB200 combination model features a built-in telephone signaler and outlet for connecting a lamp. Just plug the telephone cord into a modular telephone jack (does not draw from phone line power). Signals all Sonic Alert remote receivers. Five year warranty.
Features:
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Selectable number of flashes
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Different flash codes for front or back door
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Works with most home intercom systems with separate additional doorbell button sensor (sold separately)
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Built in chime (can be turned off)
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Compatible with all Sonic Alert receivers
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12V battery (not included)
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Signaler uses a 9V battery (not included)