The Ajax 12V PSU for NVR is an alternative power supply board that replaces the standard 110/230 V power unit inside the Ajax NVR and allows operation from a 12 V DC power source. This enables the network video recorder to run from a low-voltage supply or external battery, making it suitable for locations without stable mains power. Package contents: 12V PSU for NVR, terminal adapter, quick start guide. Compatible devices: Ajax NVR (8-channel), Ajax NVR (16-channel).