Best Variable Frequency

ZelenDecor Anti Barking Device Ultrasonic Dog Barking Deterrent Black

2-in-1 ultrasonic anti barking device provides a safe and effective solution for dog training and bark control..
25KHZ fixed frequency and 30KHZ variable frequency, ensure that one of them can be used effectively..
16.4ft effective control range, makes it suitable to be used indoor or outdoor..
Rechargeable anti barking device, charged in 2 hours and works about 60 days..

6"x9" XS Component Set (tweeter can be mounted coaxially or be flush or surface mounted.
150 Watts RMS Power Handling / 4 Ohm Impedance.
45Hz - 25kHz Frequency Response / 93db Sensitivity.
Features XS28 28mm (1.1") Silk Tweeters / 3.0" Woofer Mounting Depth.
Features XS Crossover with Tweeter Attenuation and Variable Frequency and Slope Settings.

TRUE RMS WATTS POWER: Full Range powered amplifier delivers an impressive 13.8V 280W RMS @ 4-ohms - 400 W RMS @ 2-ohms - 420 W RMS @ 4-ohms Frequency response: 20Hz - 20KHz.
HIGH & LOW-PASS CROSSOVER: Variable: (HPF) 120Hz - 3kHz Variable: (LPF) 50Hz - 250Hz Subwoofers reproduce sound based on a number of different range frequencies. Set the exact sound specifications for the bass frequency reproduction.
MULTICHANNEL: This amplifier has up to four (4) channels for you to increase sound quality and clarity for your speakers or subwoofers.
CLASS AB: Our technology makes this amplifier extremely efficient by increasing sound quality and power output while reducing distortion.
BASS BOOST allows you to adjust the low bass within the boost range to just the way you like it.

insulated screwdriver kit【High-quality materials】This is frequency screwdriver srt is adopted precision zirconia ceramics bits, good quality and durable..
non-conductive screwdrivers【Performance】No electromagnetic induction, electrically and thermally insulated. Non-magnetic, non-static..
non-magnetic screwdriver【Durable】Strong hardness, not easy to wear, good workmanship..
ceramic screwdriver set【Widely Used】The frequency screwdriver kit is suitable for high frequency circuit adjustment. Fit for various inductance, semi variable capacitor, half electric resistance and big brand SMD parts..
anti static screwdriver【Multiple Choices】8 different bits for your convenient use..

Package: Hifonics BXX1200.4 + Complete 4 Channel 4 Gauge Amp Kit.
BXX1200.4: Brutus 1200W RMS 4 Channel A/B Speaker Car Audio Amplifier.
Rating: 4 ohms: 150 watts x 4 channel. / 2 ohms: 300 watts x 4 channel. / 4 ohms, bridged: 600 x 2 channel..
Variable full/low-pass filter: 50 - 250 Hz, 12 dB/octave / Variable full/hi-pass filter: 120 - 3000 Hz / Variable Bass Boost: 0 to +10 dB bass boost.
Frequency Response: 10 - 45000 Hz / Total Harmonic Distortion (THD): .05% / Signal to Noise Ratio: >90 dB.

FEATURES: This E.7 1/2 DIN 7-Band Equalizer includes: independent subwoofer level control, 2 selectable balanced RCA inputs, RCA outlets for front, rear, & subwoofer. It also includes white LED backlit control knobs and built-in 7V max line driver..
DESIGN: The equalizer contains 7 frequency bands, +/- 12dB boost/cut for each band, LED display shows frequency & voltage, variable 30-300Hz subwoofer low-pass filter, variable 15-50Hz 12dB subsonic filter, input selector switch & fade control..
RCA INPUTS: With the RCA inputs so that you can connect it to your aftermarket system. The RCA outputs ensure that your amplifiers will get a clean, powerful signal for maximum performance..
BALANCE LOW/HIGH: Precision Power E.7 offers 7 bands of equalization that’ll let you fine-tune your sound, along with independent master volume, subwoofer level, and fader controls that’ll maintain your highs and lows in balance..
VERSATILITY: Perhaps you have an older car stereo system that you need to get more or you have an all-new setup that you crave the maximum potential, this equalizer will help you achieve that by fine tuning your sound..

Package: Hifonics BXX4000.1D + 0 Gauge Amp Kit.
BXX4000.1D: Brutus Class D 4000W RMS Mono Car Subwoofer Amplifier.
Max Power Rating: 1 ohm: 4000 watts x 1 channel / 2 ohms: 2000 watts x 1 channel / 4 ohms: 1000 watts x 1 channel.
Variable low-pass filter: 35 - 250 Hz, 12 dB/octave / Subsonic filter: 15 - 35 Hz / Variable Bass Boost: 0 to +10 dB bass boost.
Frequency Response: 10 - 250 Hz / Total Harmonic Distortion (THD): .1% / Signal to Noise Ratio: >95 dB.

VFD Mode filters variable frequency drive signals and provides accurate voltage and frequency measurements during maintenance and troubleshooting.
LoZ Mode eliminates ghost voltage readings associated with long-run applications.
Powerful Worklights eliminate the need for a flashlight while performing tests in dim lighting.
Data Record feature captures electrical measurements and provides wireless data transfer.
Integrated Bluetooth technology connects the FLIR DM93 to the FLIR Tools Mobile app on your compatible mobile device.

Low influence of external low frequency magnetic fields: @ IN: 3. 500 mA – 600. 0 mA ≤ 30 A/m, operating class 2.
True-rams measurements for accuracy when measuring complex, non-sinusoidal waveforms.
Mechanical jaw lock to assure accuracy of low current measurements, avoiding disturbance from measured wires and magnetic fields.
Selectable filters: low pass 50/60Hz filter to perform measurements on equipment driven by variable frequency drives (VFDs) or affected by high frequency noise, appliance filter to conduct leakage current measurements on appliances and no filter.