Mighty Mule Wireless Driveway Alarm (FM231) and Digital Keypad (FM137)

Mighty Mule Wireless Driveway Alarm (FM231)
Wireless driveway alarm, electromagnetic technology detects vehicles entering & exiting driveway & alerts you with indoor chime, up to 400' range from indoor receiver to driveway sensor, does not detect people or animals, transmitter requires 2 "aa" batteries, not included, note: use lithium alkaline aa batteries in colder climates, sensitivity adjustment 3' to 12' radius, dip switches for personalized transmission Codes..
Keep track of vehicles entering or exiting your property with the Mighty Mule Driveway Alarm. (FM131) When a vehicle passes the sensor, the receiver emits an audible tone. Easy to Install and stake is included in kit. The electromagnetic sensor will sense large metal objects and send a signal to the interior base station to let you know someone is there. Install the batteries, near the installation site so the sensor can "learn" the area. If the batteries are installed in the home; the unit may not function properly.

Mighty Mule Wireless Digital Keypad (FM137)
The Digital Keypad is designed to control access to all Mighty Mule automatic gate openers. Wireless requires 3-AA batteries, sold separately. Wired applications require 16-gauge, low voltage wire (RB509), sold separately.
The Digital Keypad is designed to control access to all Mighty Mule automatic gate openers. It can be programmed to use up to 25 different personal identification number (PIN) codes, and each code can be set up as a temporary or permanent security access code. Each code is face programmable with additional security features built in. This Digital Keypad can be easily installed wirelessly within 50 feet of your gate opener control box. Requires 3-AA batteries (not included).