for SMILO SM2/SM4 is a remote control (the latest model) with a sturdy black casing Simply program the receiver or access the control panel. This remote control is not compatible with Flor& radio controller. Security: dynamic code provides a high degree of security, non-copyable code. Type: For use with receiver programming Frequency: 433.92MHz Code: Rolling Code Channels: 2 / 4 Buttons Distance: Open space 10m-150m Remote Control Model: for SMILO SM2; for SMILO SM4 Receiver Models: SMXI, SMXIS, SMX2, SMX2R, OXI, OX2 Access to receiver required. Please make sure you have access to your receiver/opener before purchase. Due to different factory batches, product wording may vary, and accessories may have slight differences in color and appearance, but this does not affect normal use. Each remote control comes with one 23A dry cell battery Color: Black Material: ABS Package Contents: 4 x 433.92MHz rolling code 2-button remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.