Features: Single button Code hopping encryption. 400 meter (line of sight) transmitting range. 2 year battery life expected under normal use. Rubber button is easy to press and click positively. LED flashes when there is a low battery condition. Unique antenna design incorporating the key ring increases the operating range by 50%. 12V battery operation (GP23A Alkaline Cell). Crystal frequency-controlled within +/- 100 KHz.
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