The MLRK1-CAL77 Motorized Latch Retraction kit offered by Command Access is an excellent solution for those who want to upgrade their existing Cal-Royal 7700 series exit devices. This kit enables the conversion of mechanical devices into efficient electrified latch pullback devices, making it an ideal choice for those who want to enhance the security of their property while ensuring easy access for authorized individuals. With its practical features and cost-effective design, the MLRK1-CAL77 kit is an excellent investment for anyone looking to improve the functionality of their exit devices.