Conex Electro-Systems CS-25B Tone Decoder, DS-25 Dual 25Hz, High Pass Filter

Description

This unit is used and sold in working condition.  There is no warranty but unit worked fine when removed from service.   No guarantee or warranty is offered.
Features Include:
Compact, self-contained unit
Front panel controls for level setting and switches to disable sensing
One or both channels of the DS25 dual sensor can be configured for 35 Hz (or some other frequency) operation.
All IC's and relays plug in for easy maintenance
The CS-25B sensor provides a simple, economical method for sensing tones from satellite systems, reel-to-reel tape machines, etc. The CS-25B is based on a modular concept that allows you to build a sensor system that exactly meets your needs.
The modules that are currently available for the CS-25B include:
DS-25 dual sensor module (can be configured for 35 Hz)
HPF25 high pass filter
PS3 power supply
DTA dual tone adaptor (used to detect 25 Hz, 35 Hz and 25/35 Hz)
You can mix a variety of these modules in one package depending on your requirements