Industrial Covert Unlimited is in its 20th year of operation. CU1.COM has been up since mid 1999. Great security & CCTV products and people who answer the phone!
Check this out!
Securityman SM-60DR Add-on Digital Wireless SD Recorder/Receiver (For DigiAir-SD)
The Securityman SM-60DR is a add-on digital wireless receiver and recorder for the popular DigiAir-SD
digital security camera system. This receiver is also a recorder as it uses an SD slot to record your video directly to an SD card.
Furthermore the Securityman SM-60DR receiver / recorder uses a digital signal for interference free transmission.