Universal Compatibility: Designed to replace for BiSecur series transmitters such as HSE1-868-BS, HSE2-868-BS, HSE4-868-BS, HS1-868-BS, HS4-868-BS, HS5-868-BS, HSS4-868-BS, HSP4-868-BS, HSD2-868-BS. This remote operates at 868.3MHz with a rolling code for enhanced security. Dual Programming Options: Easily program your new remote either by copying the code directly from your existing remote or through programming it via the receiver. Note: This model features a rolling code (blue LEDs) and is not compatible with fixed code systems (red LEDs). Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Multi-Channel Functionality: Equipped with 2 buttons. Color: As shown Material: plastic Package Contents: 2 x Garage Door Opener 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.