The CdS cell is hermetically sealed in a metal to glass case and further protected by epoxy resin in a molded plastic housing. Three standard types are available for applications requiring “turn off” and “turn on” resistance values between 10k and 40k Ohms.
The sensor must be mounted with light-sensitive area facing ambient illumination. These sensors meet the requirements of U.S. Coast Guard Specification number 234.
Technical Specification | |||
Sensor Type | C | R | L |
Color | White | Red | Gray |
Resistance 2ft-c (ohms) | 129.0k | 49.0k | 129.0k |
Resistance 40ft-c (ohms) | 10.8k | 4.1k | 10.8k |
Mounting | Inside Lens | Inside Lens | Outside Lens |
Lens Color | Clear | Red or Green | – |