RESOLUTION RE311 MIGHTY MOUSE MICRO DSC 2 PACK

Features:

• Smallest Door/Window Sensor & Magnet in the Industry.
• Full-sized transmit range, AND…
• 4-6 year battery life on CR1632 battery.
• Invisible external antenna – gives great range and long life
• Low Battery indication.
• 1.75 x 0.75 x 0.2 inches