0.5 Hz to 5 MHz Sine, Square, Triangle, Pulse, & Ramp output Coarse and Fine tuning 4 digit LED display Variable duty cycle Variable DC offset Variable amplitude output plus 20dB attenuator 20Vpp output into open circuit (10Vpp into 50Ω) 2 Year WarrantyThe B&K Precision Model 4011A Function Generator is a versatile signal source. The 4011A provides the added convenience of a built-in frequency counter. This permits a more accurate display of the output frequency than is possible with a simple calibrated dial. Coarse and fine tuning controls allow you to precisely set the output frequency.