Model: SMG-2024 Type of programming: Programming with the receiver Frequency: 433.92 MHz Code: Rolling Code Buttons: 4 Working Range: 30m - 100m (open space) Battery: Includes battery Security: Dynamic code provides a high level of security; non-copyable code Compatible with: C940 433.92 MHz C943 433.92 MHz C945 433.92 MHz CM128 433.92 MHz CM842 433.92 MHz CM844 433.92 MHz E940M 433.92 MHz E945M 433.92 MHz E950M 433.92 MHz 2.0 Type 433.92 MHz TX2EV 433.92 MHz TX4EV 433.92 MHz TX2EVS 433.92 MHz TX4EVS 433.92 MHz TX2REV 433.92 MHz TX4REV 433.92 MHz TX4UNI 433.92 MHz TX4RUNI 433.92 MHz TX4UNIS 433.92 MHz Color: Black Material: Plastic Note: Due to different batches, there may be slight differences in product appearance and printed text, which do not affect functionality Package Contents: 1 x Garage Door Remote Control Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement error allowed is +/- 1-3 cm.