Security：KP-2S (Phased Out)
Wireless keypad, economic model
| Password | 4 digits |
| Power Source | Four AAA alkaline batteries. |
| Current Drain | 4uA @standby, 36mA @operation |
| Estimated battery life | 5 years (@ operate 4 times/day) |
| Size | 66.5 x 32 x 154.5 mm |
| Weight (w/o battery) | about 124g |