Please note: slight color differences due to lighting or screen display variations may occur and do not affect the use of the product. Universal Compatibility: Designed to replace 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: Program the remote by copying the code from an existing remote or via the receiver. This model uses a rolling code (indicated by blue LEDs) and is not compatible with fixed code systems (red LEDs). Multi-Channel Functionality: Features 4 buttons that allow control of up to 3 different garage doors independently. Each button corresponds to a separate channel for convenient management of multiple access points. Material: Plastic Color: As shown Package contents: 5 x Garage Door Opener Note: The package includes only the items listed above; other products are not included. Measurement error allowed is +/- 1-3cm.