Best Transmitting Tube

Retevis Walkie Talkie Earpiece with Mic, Compatible RT22 RT21 H-777 RT68 RB29 RT27 pxton Arcshell Two Way Radios, Security Acoustic Tube 2 Way Radio Headset with Coil Design(10 Pack)

Long enough line for the person of average size and height.
ABS material makes it not tangle like thinner cords.
wires didn't get in way too much with 2 clips.
Clear audio both via receiving the in-ear speaker and transmitting via the mic.
acoustic tube with 150Ohm speaker impedance makes it better in noisy conditions.
Fits snugly in ear and doesn't fall out with easy access to hook up.
an additional ear plug to replace the original one if it gets dirty or if you loose it .
hold up to your workers’ abuse day after day.
PTT button is easy enough to find and press.
new metal cap on tube connection make it fastened.
Make your security team look very professional.
you can do things without people hearing you.
hide it under your shirt and you're good to go.

...eate an exclusive space that suits your mood..
【Mini Exquisite Product Size】: About 3.15*1.97*3.34inchs, the size is smaller than other models of clocks, but it fits anywhere. Perfect for desktop, den, bar, shop, etc, very eye-catching..
【Exquisite Modeling】: It is made of aluminum alloy base, high light-transmitting glass and ABS with exquisite workmanship, creating a very beautiful and practical product, which can be perfectly integrated no matter what style your room has, it is also a gift The perfect gift for friends and loved ones..
【100% Satisfied Service】:Samsers will provide you with 24 hours email reply, 100% satisfied service and lifetime technical support. No matter what problem you encounter, we guarantee to provide a 100% satisfactory solution, please do not hesitate to contact us!.

Hands Free Calls and Navigation: Our wireless auxiliary Bluetooth transmitter receiver car kit built-in a microphone, when the call rings, you can answer/hang up the call by long stress the multi function button to make hands-free calling. Besides, this Bluetooth transmitter broadcast supports transmitting voice notifications from your phone existing navigation apps, free your hands and give you a safer driving.
Dual Mode of Transmitting Receiving: This small and potable Bluetooth adapter have dual mode – transmitting and receiving mode via slide the right button to easily switch the mode. At the transmitting mode, plug the 3.5mm audio cord into your TV/Laptop/computer/projectors aux jack, transmitting the sound to you wireless headset. At the receiving mode, plug the converter into the car audio/ speaker /home stereo make music more louder, then enjoy the music auditory feast.
Wide Compatible: Our Mini universal Bluetooth transmitter can via plug 3.5mm audio cable in aux jack connect to non-Bluetooth-enabled devices, such as your wired headphones, old cars, motorcycle, music streaming stereo system, and compatible most Bluetooth devices, such as cell phone, IPhone, IPod, Samsung, Huawei and other smart phones.

【Compatible】The two way radio earpiece is compatible with leading radio headset brands kenwood, puxing, wouxun,such as UV-5R UV-82 BF-F8HP H777 RT7 RT21 TK-3140 TK-3148 NX200 NX300.Don't work for motorola and midland radio,more fit models can search on the list..
【Wide Application Scenarios】The transparency acoustic tube behind the ear have better concealment,great for covert or stealth missions.The earbuds with soft silicone,comfortable enough to enjoy the communication.
both two make wear strong and keep your conversation private..
【Clear Audio Sound】Earpiece with acoustic tube to make the sound of the earphone clearer when transmitting and high quality sound. Soft In-ear design silicone earplug for you to comfortably wear, and wear it all day without discomfort..
【High-Quality Materials】This walkie talkie earpiece with mic is made of durable PU material.Pu material with tensile stretching up to 5 kg.The cable reinforced by fiber, folding capability of plastic parts was improved..
【What You Received】1* 2 Way Radio Earpiece with Mic.
2* Soft Silicone Earbuds .If this walkie talkie earpiece with mic have any problem,pls let us know,you will take no risk when you purchase with us..

S-Pixie Kit is a small and exquisite shortwave radio station, working mode is CW. Transmitting local oscillator frequency: 7023KHz.
receiving local oscillator frequency: about 7023-7026KHz..
Radio Station Power Supply Voltage is 9-13.8V (Battery or Linear Regulated Power Supply is Recommended), and the positive and Negative Poles are Not distinguished. Antenna: 50 ohm, 7MHz, standing wave ratio below 2.0..
Radio station receiving static current: 20mA, transmitting current: 120mA , Transmitting power: 1.2W, does not support automatic transmission, key: manual key.
Before powering on the radio station, please connect a dummy load to prevent accidental emission from burning..
After you purchase, I will send you the product manual through the platform chat window. After getting the product, please tear off the protective film on the product protective case. You will get exactly the same product as the main picture. We will provide you with quality service. Please feel free to contact me if there are any problems during the use of the product..

The ARVA EVO4 is a simplistic, fast-acting avalanche beacon. This beacon has a 40m search range and an easy-to-use LCD digital interface. The EVO4 features a group check function, marking button, and Clip For Safe Concept. The Clip For Safe automatically puts your beacon into transmitting mode once clipped into the transceiver strap. This reduces trailhead complacency to make sure your beacon is on and transmitting, as long as it's stored in your ARVA chest strap. This beacon is an affordable.

... When someone passes the infrared region for an adjusted response time, the detector will send alarm signal to the security alarm host (which not included here) work with 2pcs power apater..
Powerful Function: Holographic spot real-time report. Unique displacing receiving, transmitting parts with big power. Full function checking, self-adaption in environment and trouble locking..
Durable: Powerful Automatic Adjustment Design-The transmit power will be adjusted automatically according to the environmental conditions, which greatly extends the life of the launching tube, while lowering power consumption..
Scope of Application: Great to be installed for security system in school, office building, hospital, home yard, etc..