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 868.3 MHz with a rolling code for enhanced security. High-Quality Replacement: This remote control is not an original equipment manufacturer (OEM) product, but it is engineered to deliver reliable performance and full compatibility with supported garage door systems. Dual Programming Options: Program the remote by copying the signal from an existing working remote or by programming directly through the receiver. Note: This model uses a rolling code (indicated by blue LEDs) and is not compatible with fixed-code systems (indicated by red LEDs). Multi-Channel Functionality: Features 4 buttons to independently control up to 3 garage doors. Each button corresponds to a separate channel for convenient multi-door operation. Color: Black Material: Plastic Note: Slight variations in appearance or printed text may occur between production batches. These differences do not affect functionality. Package Contents: 2 x Garage Door Opener Remote Controls Note: Only the items listed above are included. Additional accessories or devices are not included. Note: Screen settings and lighting conditions may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.