D-4B: 4-Channel, 4-Button Handheld Transmitter

The Nortek Security & Control Family of Brands

The Model D-4B 4-Channel, 4-Button Handheld Transmitter is a four-channel transmitter that can initiate four separate functions. It is used in many remote switching applications where a portable four-channel transmitter is required. The first two digits of the digital code sent will be off or on depending on which transmitter button is pressed. Each transmission causes the red LED indicator on the front of the transmitter to light, showing that the transmitter is sending a signal and that the battery is in good condition.


  • Four test/operate pushbuttons
  • Test/operate LED
  • Removable wall mounting clip
  • Standard digital format: 64 selectable codes
  • Powered by one 9-volt battery (included)
  • Current consumption: 12 mA transmitting
  • RF frequency: 303.875 MHz
  • 2.16″ W x 3.75″ H x 1″ D
  • Order number: SNT00048B

Installation Manual

WARNING: This product can expose you to chemicals including 1,3-Butadiene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov