PDK Red High-Security One-Door Controller (PDK-R1) Refurbished Compatible with existing doorbell transformers

Compatible with existing doorbell transformers (requires 16-30VAC

which means you don't have to worry about elements such as dust and rain getting inside of your camera

16-Channel NVR

Built-in speaker and dual mics for crisp and clear audio

1 SATA HDD slot up to 6TB

PDK Red High-Security One-Door Controller (PDK-R1) Refurbished Compatible with existing doorbell transformersGreat Condition, Used, Has Accessories. Does Not Come in Original Box Single door controller: Perfect for adding a single door to your access control system. Advanced Security: ProdataKey Red products lead the industry in secure communication protocols. This includes OSDP, mobile, and encrypted credential communication. Power Monitoring: Equipped with an on board power supply, and a fully supervised power circuit that monitors input, output, battery