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3M Health Care MMM 2160 Littman Master Cardiology Stethoscope, Black Tubing, 27\ Length

Hear high or low frequency sounds by slightly adjusting pressure on the chest piece.
Two sound paths in one tube eliminates the rubbing noise of traditional double tubes.
Headset is easily adjusted for individual fit and comfort.

Outstanding acoustics: The highest in Littmann mechanical stethoscopes..
Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece..
Dual-lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes..
Headset is easily adjusted for individual fit and comfort. Angled eartubes align with ear canals..

Outstanding acoustics: The highest in Littmann mechanical stethoscopes..
Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece..
Dual-lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes..
Headset is easily adjusted for individual fit and comfort. Angled eartubes align with ear canals..

Outstanding acoustics: The highest in Littmann mechanical stethoscopes..
Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece..
Dual-lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes..
Headset is easily adjusted for individual fit and comfort. Angled eartubes align with ear canals..

Lightest weight of all Littmann adult stethoscopes at just 118 grams..
Dual-sided chestpiece provides versatility of both a tunable diaphragm and open bell..
Teardrop-shaped chestpiece for easier positioning under blood pressure cuffs and around bandages..
Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece..
Soft-sealing eartips provide an excellent acoustic seal and comfortable fit..

Outstanding acoustics: The highest in Littmann mechanical stethoscopes..
Tunable diaphragm: Hear high or low frequency sounds by slightly adjusting pressure on the chestpiece..
Dual-lumen tubing: Two sound paths in one tube eliminates the rubbing noise of traditional double tubes..
Headset is easily adjusted for individual fit and comfort. Angled eartubes align with ear canals..

【One-year after-sale warranty】The PWM to voltage module converts PWM digital signals to 0 to 10V analog signals. It can be used to switch the signal interface of PLC or other industrial control board. Adjust the output voltage by adjusting the PWM duty cycle. The module is small in size and easy to apply in different places.003cbr003e.
Using MCU embedded technology. Easy to operate, can be fine-tuned by potentiometer.003cbr003e.
Select the PWM signal input level range by short circuit. The module is small, easy to carry and easy to use.003cbr003e.
(current greater than 100mA)，PWM signal receiving frequency range: 1KHZ-3KHZ.
When power on for the first time, it is best to do a calibration and debugging: find a signal with a 50% duty cycle and connect it to PWM and GND. Jumper caps set the corresponding voltage range. When the frequency is 1KHZ-3KHZ, use a multimeter to measure the two ports of VOUT and GND. At this time, the meter displays about 5V. Adjust the potentiometer on the board so that the multimeter displays 5.00v.003cbr003e.

Professional studio Reference semi-open headphones designed for tracking, mixing, mastering and playback..
Proprietary large 50mm drivers with rare earth magnets deliver an extended frequency response and great dynamic range.
Circumaural, over-ear, design with velour cushioning provides outstanding comfort for long listening sessions.

...f the musculoskeletal joints of the spine and extremities, or for soft-tissue musculosketletal mobilization by a licensed health care personal only， you can rest assured that we have quality assurance.
Quality-Working Ratio: This chiropractic adjusting tool built-in high-frequency fan can cool the machine to extend the service life. Therapy Spine Massager, based on the physical pulse principle and the massage method of the human hands, so this is the same comfort as the hand press, which will free your hands, let you have a good time.
Easy To Use: This chiropractor activator tool is lightweight, safe, durable, portable and sturdy, home treatment for all. Electric Spine Chiropractor. 15 minutes per day reduces the tension on your neck and can be more effective than a whole chiropractic sessionMechanical therapy, easy treatment, so you can buy it for your family,older people.

The piston outside the casing contains special grease, which vibrates together with the piston and runs smoothly and quietly..
Commonly used for vibrating table, filter screen, silo emptying, bulk material washing and compaction..
Made of high‑quality materials, wear‑resistant and durable, meeting the needs of various work scenarios..
There are standard 1/4in threaded holes on the outside to facilitate smoother exhaust of the vibrator..
The pneumatic vibrator can control the amplitude and frequency by adjusting the voltage..

The piston outside the casing contains special grease, which vibrates together with the piston and runs smoothly and quietly..
Commonly used for vibrating table, filter screen, silo emptying, bulk material washing and compaction..
Made of high‑quality materials, wear‑resistant and durable, meeting the needs of various work scenarios..
There are standard 1/4in threaded holes on the outside to facilitate smoother exhaust of the vibrator..
The pneumatic vibrator can control the amplitude and frequency by adjusting the voltage..