HEDDOLF Garage Door Openers ID220-IK/312MHz Remote Control Single button visor mountgarage door opener remote control. Compatible with IDC Micom, ESP Micom and Intercontinental Dynamics Garage Door Openers using the 312 MHZ frequency. 9 - 2 position ( + / - ) code switch setting. Battery, visor clip, and coding instructions included. Size: 3 1/2" x 2 1/4" x 3/4