Industrial Covert Unlimited is in its 20th year of operation. CU1.COM has been up since mid 1999. Great security & CCTV products and people who answer the phone!
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Add-on Wireless Door Bell (for IWATCHALARM series)
**Fully Compatible with IWATCHALARM Series
Battery Powered: DC 3.0V (2X AAA battery, last up to 1 year)
Transmission Frequency: 433 mHz
Transmission Distance: 490 feet clear line of sight (no walls)
Buttons : 1
Size (LxWxH): 2.94 x 1.56 x 0.81