BK878B is a True RMS Bench Digital Multimeter manufactured by B&K Precision. It has a maximum DCV of 1000V and ACV of 750V. It also has a display resolution of 3 3/4 digits and a maximum DCA of 20A. It is equipped with a backlit LCD display, auto range with manual override, and data hold functions. Also included are user adjustable auto power-off settings, low pass filter, back light settings, and hard case. The meter also has many built in safety features, such as over load protection, buzzer, and automatic power off when short circuit is detected.