Heddolf 0219-340 keychain remote 340 Mhz frequency. Codes using 9 dip switches with 3 positions each (+/0/-). Compatible with Over Head Door, Crusader, Heddolf brand garage door openers. Key-chain and battery included.
Dimensions: 3.00 x 2.00 x 1.00 (W x L x D, inches)