SW-2499 - ESAW Signal Generator 

Capable to generate the (sine/triangular) wave signals within range (100 Hz to 3 kHz) at 3W output maximum. An internal speaker field inside the plastic molded case and we can also use an external speaker via. 4 mm blue sockets. Two color-coded sockets are used for CRO connections marked as an output signal. The operating voltage for the instrument is 9V DC and applied by a battery that can easily remove out from the battery compartment. The frequency and amplitude can be adjusted at any desired range by just rotating the knobs field on the base.