FREQUENCY - 7679 ads

Friday, September 14, 2018

Quantity : 100 at lea - Price : $54.00~ $23.00

Model E205B Description 5" Active Speaker + Class AB Bi-Amp + Bluetooth Power(RMS) 40W SPL(1W/1m) 96±2 dB Freq response 30Hz-20KHz Input/ output connectors XLR/JACK/RCA LF 5" FULL FREQUENCY WOOFER Power supply 230V/110V Location : No.1111 Jinhai Road,Cixi Coastal Economic Development District...

Friday, September 14, 2018

Quantity : 100 - Price : 66USD~44USD

Type PC2000 PM3000 PM4000 PC5000 Power 64W(stereo 8 ohms) 98W(stereo 8 ohms) 145W(stereo 8 ohms) 180W(stereo 8 ohms) 100W(stereo 4 ohms)156W(stereo 4 ohms) 225W(stereo 4 ohms) 256W(stereo 4 ohms) 169W(bridge 8 ohms) 264W(bridge 8 ohms) 450W(bridge 8 ohms) 508W(bridge 8 ohms) Input...

Friday, September 14, 2018

Quantity : 100 - Price : 38USD

15 inch 2 way Active speaker with Class D amplifier with MP3 player /USB/Micro SD /FM/BT/5 Band EQ/Remote Control JACK for Microphone / Guitar input RCA input,AUX output 15" woofer : 1 X 30OZ 1.2"VC 4OHM with LED light Driver : Piezo tweeter Frequency response : 50Hz-18KHz Sensitity ...

Wednesday, September 05, 2018

Quantity : 1 - Price : customized

SP60(21-76mm) ERW tube mill is a series of tube machines that builds longitudinal weld seam pipe with steel strips of certain width. It starts by uncoil and flatten the slit steel coils into steel strips. The flattened steel strips will be inserted into the forming machine and the...

Thursday, August 30, 2018

Price : 1,00 €

Product Description This is a middle RF power cell phone jammer with handbag design. The jammer is designed to protect VIP person or special agent. It is developed on explicit requests of the military and governmental institutions around the world. This jammer offers an effective...

Tuesday, August 28, 2018

Quantity : at least 4 - Price : USD 10-470

This wire rope isolators are now widely used in the field of military shock vehicles, armored cars, missile, launcher, highway transportation, marine, shipbuilding, navy, energy, photographic equipment, aerial equipment, communication apparatus, electronic sensing devices, mobile...

Tuesday, August 28, 2018

Quantity : at least 4 - Price : USD 10-470

Wire rope vibration isolator was developed successfully by America in the 1970s, it is a typical nonlinear vibration isolator, its damping force characteristics have something to do with deformation with good vibration isolation performance. When the amplitude is large enough, the...

Tuesday, August 28, 2018

Quantity : at least 4 - Price : At least 50 Dollars

With the rapid development of modern industrial engineering, the various manufacturing machine, transportation machine are all developing to high speed, high efficiency, high precision, and automation. However, with the increase of equipment's power and speed, the intensity of the...

Tuesday, August 28, 2018

Quantity : at least 4 - Price : USD 10-470

Rubber vibration isolator is the most widely used vibration isolator, it is widely used in various fields like the vehicle, shipping, automobile, plane, bridge and instrument. Rubber vibration isolator mounts is using viscoelastic damping structure elastic deformation to achieve vibration...

Tuesday, August 28, 2018

Quantity : at least 4 - Price : USD 10-470

From the 1970s, the technology of anti-vibration mounts is applied to the project construction of bridge, road, and railroad. Contact deformation, friction, and damping of vibrations occurring in temporary fastenings and permanent joints have the essential influence on dynamical properties...

Thursday, August 23, 2018

Unmanned aerial vehicle (UAV) graphic transmission station refers to the equipment used for the transmission of images of unmanned aerial vehicles, including airborne map transmission stations, ground map radio stations and display terminals. The airborne map transmission station...

Thursday, August 23, 2018

Quick Details Work voltage V： DC13V~16.8V Work current A： ≤9A@DC14.8V Work time： ≥1.5h Output power dBm： 40dBm@1550～1620MHz（±1dB） Output power dBm： 37dBm@2400～2483MHz（±1dB） Output power dBm： 37dBm@5725～5852MHz（±1dB） Dimension： 1323mm×403mm×341 mm（with battery and antenna） Work environment...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-361 Rechargeable Portable BTE Hearing Aid Hearing Amplifier - Frequency Range: 200-6000Hz Total Harmonic Wave Distortion: 500Hz <= 0% 70dB</td> 800Hz <= 1% 70dB</td> 1600Hz <= 0.8% 65dB</td> Reference Test Gain: Target 43...

Wednesday, August 22, 2018

- Specification of JH-158 BTE Style Ear Amplifier Cheap Hearing Aids - Max Sound Output 130 ± 5dB Voltage 1.5V Sound Gain ≥45dB/44 Battery size LR754 Total Harmonic ≤5% Battery capacity/Mah 68 Wave Distortion Operation ≤4mA Operation current/mA 4.5 Current Frequency...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-116 Personal Sound Amplifier Behind The Ear Hearing Aid - Max Sound Output 130 ± 5dB Voltage 1.5V Sound Gain ≥45dB/44 Battery size LR754 Total Harmonic ≤5% Battery capacity/Mah 68 Wave Distortion Operation ≤4mA Operation current/mA 4.5 Current...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-233 Body Worn Pocket Ear Sound Amplifier Hearing Aid - Max Sound Output 131 ± 5dB Voltage 1.5V Sound Gain ≥55dB/58.9 Battery size AA Total Harmonic ≤5% Battery capacity/Mah 2400 Wave Distortion Operation Current ≤4mA Operation current/mA 6...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-238 Pocket Body Worn Hearing Aid Hearing Amplifier - Max Sound Output 130 ± 5dB Voltage 1.5V Sound Gain ≥50dB/51.5 Battery size AA Total Harmonic ≤5% Battery capacity/Mah 2400 Wave Distortion Operation ≤4mA Operation current/mA 6.9 Current...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-909 Rechargeable ITE Hearing Aid Hearing Amplifier - Highest sound pressure level for input SSPL 90dB 126 ± 3dB Equivalent input noise level: ≤32dB Max. Output sound level gain: 35±5dB Reference Test Gain: 30±5dB Average Saturation Output(HF-Average SSPL 90)...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-905 Rechargeable ITE Hearing Aid Hearing Amplifier - Max Sound Output 125 ± 5dB Voltage 1.2V Sound Gain ≥35dB Battery size Total Harmonic ≤5% Battery capacity/Mah 40 Wave Distortion Operation ≤3mA Operation current/mA 1.2 Current Frequency...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-238 Pocket Body Worn Hearing Aid Hearing Amplifier - Product name Rechargeable ITE hearing aids sound amplifier Title of commodity/item number Rechargeable hearing aid/JH335 Color Beige/optional colors Frequency range 200Hz-7000Hz Total harmonic wave...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-907 ITE Mini Hearing Aid Hearing Amplifier - Max Sound Output 120 ± 5dB Voltage 1.5V Sound Gain ≥35dB/28 Battery size A10 Total Harmonic Wave Distortion ≤5% Battery capacity/Mah 100 Operation Current ≤6mA Operation current/mA 3.5 Frequency...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-900a ITE Hearing Aid Hearing Amplifier - Max Sound Output 130 ± 5dB Voltage 1.5V Sound Gain ≥45dB/49.4 Battery size A312 Total Harmonic Wave Distortion ≤5% Battery capacity/Mah 160 Operation Current ≤4mA Operation current/mA 1.6 Frequency...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-906 ITE Hearing Aid Hearing Amplifier - Max Sound Output 125 ± 5dB Voltage 1.5V Sound Gain ≥35dB Battery size AG3 Total Harmonic Wave Distortion ≤7% Battery capacity/Mah 43 Operation Current ≤6mA Operation current/mA 1.7 Frequency Range 200-4000Hz...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-339 USB Rechargeable BTE Hearing Aid Hearing Amplifier - Max Sound Output 128 ± 3dB Noise EIN <26dB</td> Sound Gain 95±3dB Battery size NI-MH rechargeable battery Total Harmonic Wave Distortion 500Hz <= 3%</td> Working current 3...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-338 BTE USB Rechargeable Hearing Aid Hearing Amplifier - Max Sound Output 128 ± 3dB Noise EIN <26dB</td> Sound Gain 95±3dB Battery size NI-MH rechargeable battery Total Harmonic Wave Distortion 500Hz <= 3%</td> Working current 3...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-337 BTE Rechargeable Hearing Aid Hearing Amplifier - Max Sound Output 125 ± 5dB Voltage 1.2V Sound Gain ≥35dB Battery size NI-MH Rechargeable battery Total Harmonic Wave Distortion ≤10% Battery capacity/Mah 40 Operation ≤4mA Operation current/mA 1...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-351R BTE RIC FM Rechargeable Hearing Aid Hearing Amplifier - Max Sound Output 125±3dB Noise EIN ≤20dB Sound Gain 40±5dB Battery size 3.7V 30mAh Built-in lithium batter Total Harmonic Wave Distortion 500Hz <= 3.1%</td> Working current ≤2...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-351O BTE FM Open Fit Rechargeable Hearing Aid Hearing Amplifier - Max Sound Output 125±3dB Noise EIN ≤32dB Sound Gain 36±5dB Battery size 3.7V 30mAh Built-in lithium battery Total Harmonic Wave Distortion 500Hz <= 3.1%</span> Working current...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-351 BTE FM Rechargeable Hearing Aid Hearing Amplifier - Max Sound Output 130 ± 5dB Voltage 1.5V Sound Gain ≥45dB Battery size Built-in lithium battery Total Harmonic Wave Distortion 500Hz <= 3%</td> Battery capacity/Mah / 800Hz <= 5%...

Wednesday, August 22, 2018

Quantity : 80000Pcs - Price : 3-50USD

- Specification of JH-301R BTE FM Balanced Armature Loudspeaker RIC Open Fit Hearing Aid / Hearing Amplifier - Max Sound Output 120±5dB Sound Gain ≥40 dB Total Harmonic Wave Distortion ≤10% Frequency Range 250-5000Hz Input Noise ≤32dB Voltage D.C. 1.5V Current ≤3...