Nortek DNT00002A 1-Channel Visor Transmitter Activates One Delta-3 Receiver Test/Operate LED Visor Mounting Clip Supplied 256 Codes Set By Dip Switches Powered By 9-Volt Battery 310 Mhz RF Frequency
Nortek Control MCT-3 3-Channel Visor Transmitter Activates One Megacode Receiver Test/Operate LED Visor Mounting Clip Supplied 1000000+ Codes Megacode Format Powered By Two 2032 Batteries 318 Mhz RF Frequency
Nortek MT-1B 1-Channel Block Coded Visor Transmitter Compatible With All Linear Access Receivers And Controllers Visor Mounting Clip Supplied Factory Block Coded In Megacode Format Powered By 9-Volt Battery 318 Mhz RF Frequency
Nortek DT-4A 4-Channel Visor Transmitter Activates Four Separate Delta-3 Receivers Test/Operate LED Visor Mounting Clip Powered By 9-Volt Battery 310 Mhz RF Frequency
Nortek DNT00017A 2-Channel Visor Transmitter Activates Two Delta-3 Receivers Independently Test/Operate LED Visor Mounting Clip Supplied 256 Codes Set By Dip Switches Powered By 9-Volt Battery 310 Mhz RF Frequency
Nortek Control MCS308911 1-Channel Visor Transmitter Compatible With 300 Mhz Multi-Code Receivers 1024 Codes Set By Dip Switches Powered By 9-Volt Battery 300 Mhz RF Frequency
Nortek Control MCS412001 2-Channel Visor Transmitter Compatible With 300 Mhz Multi-Code Receivers 1024 Codes Set By Dip Switches Powered By 9-Volt Battery 300 Mhz RF Frequency
Nortek DNT00002A 1-Channel Visor Transmitter Activates One Delta-3 Receiver Test/Operate LED Visor Mounting Clip Supplied 256 Codes Set By Dip Switches Powered By 9-Volt Battery 310 Mhz RF Frequency