Pre power amplifier

4 IN ONE Multifunctional LED night light Bedside Lamp Touch + Speaker Bluetooth 4.0 +Pass Calls, bedside lamp compatible with any Bluetooth device: Android,Tablet, etc... up to at 10 meters distance. Multicolor Table Lamp Mode Touchscreen Bluetooth Bedside Lamp Control 3 Lighting Modes: White Light (3 Levels: Low, Normal and High), 7 Color RGB Change, LED Night Light Multicolor Flashing. The Bluetooth speaker automatically reconnects to the last device used, and the bluetooth lamp turns on and off by touching the upper mesh to change the color of the lights There is a hook at the bottom of the touch led bedside lamp, the manual in French, easy to carry Portable Speaker Light Feature Bluetooth Speaker Feature Micro SD Card, Aux Line-in & Bluetooth Hands-free Mode Feature Warm Light Mode Music playing Portable and Enjoyment Audio Input: AUX, Micro SD-Card Color: White Power Supply: DC 5V /500mA Battery: DC 3.7 V Frequency: 50HZ~20KHZ Product Size: (L) x (W) 4 x 5 inch

-Mini HIFI digital bluetooth audio power amplifier and Two main channel output. - Aluminum alloy body, durable, the body is made of aluminum alloy once  -Low distortion supplies a clearer, stronger and more powerful sound. -With Remote control function and Supports FM stereo radio. - The machine supports bluetooth operation, and supports line input.

Product details of PAM8610 15W + 15W Two Channel Stereo Class D Amplifier Board Supply voltage: DC 7V-15V 2. Output power: 10w + 10w (8 load) 3. Efficiency: 90% 4. Shutdown Current: 4uA 5. Quiescent current; 20mA 6. SNR: 86% 7. Total harmonic distortion: 5W / 1KHz / 8 ---- 0.1% 8. Frequency range: 20Hz-20KHz 9. Input impedance: 15K 10. Output Impedance: 4-8 11. Amplifier board size: 30mm * 25mm * 2.5mm 1. The power supply voltage limit is 16.5V, do not use more than this voltage. 2. The power supply is recommended for 12v, 3A power supply filter better 3. 4-8 inch stereo speakers recommended. 4. Do not short-circuit the audio output to each other or shorted to ground. 5. Carefully check before electricity, ensure wiring is correct before electricity.

Product Description: Name:4 way amplifier with gain adjustable Category:Household 20dB amplifierFeatures 1.Adopting imported high-frequecy amplification component, low noise current design 2.Aluminum material housing,fast heat dissipation qualityTechnical parameter Bandwidth (MHz) 45-860 Total gain(dB) 20±2 Gain adjustment(dB) 0-10 Flatness in band(dB) ±0.5 Slop(dB) 3 Noise factor(dB) ≤5 Power consumption(W) 1 Output number 3 Dimension(mm) 122X70X30MM

Max sound output: 130±5dB Sound gain: ≥50dB Total harmonic wave distortion: ≤10% Frequency range: 300~4000Hz Input noise: ≤30dB Voltage: DC 1.5V Current: ≤4mAUsage Open the cartridge cover, put the battery in the correct position. Zine Air battery is the best choice and has a longer life. Before using, make sure that power is turned off, or make the volume to “l”. Put the ear hook on your ear, plug in the ear tightly. Note:The unit is on “off” position, and volume is on “l”, otherwise the instant sound will make you uncomfortable. Turn the power, and adjust the sound volume to get clear sound, If you hear the whistling sound, please check whether you have plugged in the earplug tightly. If it can’t be plugged tightly, please change the other size plug.

CA-6928 Bluetooth audio module Bluetooth power amplifier board 3.3v-5v: CA-6928 Bluetooth Stereo Audio Module For Power Amplifier Board 3.5V~5V Features: Input Voltage: DC 5 V Audio Out: L R G (it must be connected to the amplifier) Receive audio signals from mobile Extraordinary Range 10 meters. Smallest and Powerful Best for any kind of amplifier. Dimensions: 24mm x 15mm x 1mm Supply: 3.5~5V Dc Current; 300ma Impedance; 4~8ohms For Free Information About Circuits Electronics Projects

BT：4.2+5.0 Dual-mode Bluetooth antenna：Hs6620 + bk3266 all need welding wire Heart rate sensor&Temperature Sensor：Heart rate and temperature in one Charging mode：wireless charging Microphone：YES Side key：Knob button/Common on / off key and function key Horn&Receiver：YES,Two in one loudspeaker and handset Power amplifier：YES Battery capacity：150 mah Multi-sport：Open and close jump、Run、situp、Football、Basketball、Badminton、Mountaineering etc. Message Push Language：Simplified Chinese、All European countries APP System：IOS 9.0 and above, Android 5.0 and above

BT: 5.0 LCD 1.99" Heart rate sensor & Temperature Sensor Motor: YES Charging mode: Magnetic wireless charging Microphone:YES Side key:YES Horn: YES,Two in one loudspeaker and handset Power amplifier: YES Battery capacity: 220mah Appearance material: Zinc alloy IP67 life waterproof.

we deal in exide batteries,narada dry battery. specifications of dry batteries(narada). The AcmeG range front access gel batteries is designed based on the Acme series, using the polymer gel electrolyte with real front access structure. The state-of the-art internal and external design ensures AcmeG the high reliability and makes the installation quite simple and safe when placed on a standard relay rack tray or in a closed cabinet. AcmeG range gel battery is designed with high energy density and suitable for 19 . 23 rack or cabinet. Technical features Long life Using the polymer gel electrolyte 4BS paste technology Special paste formula Special patented grid alloy Wide operational temperature range Excellent charging and discharging ability at low temperature Decline the water-loss at high temperature special structure real front access structure makes the installation and maintenance squite simple and safe suitable for 19 . 23 rack or cabinet The specially centralized venting system ensures the small gas be vented our of the closed cabinet Compliant standards Designed to be compliant with: IEC 60896-2 BS 6290 Part 4 Telcordia SR-4228 EUROBAT GUIDE UL Manufactured under system ISO9001 & ISO14001 by NARADA Battery installation compliant with: EN 50272-2 or local equivalents Main applications Telecom standby and cyclical applications UPS Power plant and power transfer system Solar energy system Emergency lighting system Products characteristics: float voltage: 2.25Vpc at 77oF(25oC) , Equalization charge voltage: 2.40Vpc at 77oF(25oC) Self discharge rate: < 2% pre month at 68oF(20oC) Design life: more than 12 years at 68oF(20oC) Shelf life: 6 months at 68oF(20oC) Recombination efficiency: :99% the Pressure at which the valve opens & reclose is Opened at 10 to 35kpa(1.45psi to 5.08psi) and closed at 3 to 15 kpa (0.44psi to 2.18psi) Temperature ranges: -40oC to 50oC Terminal Hardware Torque:10�0.1N m Container Material:

  FEATURES Sonic Emotion Absolute 3D Sound Technology iPod/iPhone Digital Audio Connection and Power Recharging Dock Bluetooth Wireless Audio Playback  (Version 2.1 + EDR) Power Recharging via USB for Compatible Tablets and Smart Phones (5 V/2.1 A)* Powerful Digital Amplifier to Drive Six Speakers and Subwoofer Supports AAC Codec for Bluetooth Technology 6 x Full-Range 5 cm Drivers Powerful 10 cm Down-Firing Subwoofer Repeat/Shuffle Play Modes Available in White or Black      

  Features: 15" spun-copper Cerametallic woofer All-digital amplifier delivers 800 watts of dynamic power Front-firing slot port with exclusive internal flare technology. L/R line-level/LFE RCA inputs for compatibility with most receivers For a simple wireless connection, add an optional Klipsch WA-2 Wireless Subwoofer Kit Dimensions: 21.5" H x 19.5" W x 22.3" D Brushed black polymer veneer cabinet with satin painted plinth    

  Features: 12" spun-copper Cerametallic woofer All-digital amplifier delivers 600 watts of dynamic power Front-firing slot port with exclusive internal flare technology L/R line-level/LFE RCA inputs for compatibility with most receivers For a simple wireless connection, add an optional Klipsch WA-2 Wireless Subwoofer Kit Dimensions: 17.38" H x 15.5" W x 18.25" D Brushed black polymer veneer cabinet with satin painted plinth    

  Features: 10" spun-copper Cerametallic woofer All-digital amplifier delivers 450 watts of dynamic power Front-firing slot port with exclusive internal flare technology. L/R line-level/LFE RCA inputs for compatibility with most receivers For a simple wireless connection, add an optional Klipsch WA-2 Wireless Subwoofer Kit Dimensions: 16.3" H x 14.75" W x 15.8" D Brushed black polymer veneer cabinet with satin painted plinth    

  Features: Powerful 12" copper-spun front-firing woofer All-digital amplifier delivers 400 watts of dynamic power Equally impressive with music and movies Low pass crossover and phase control Line/LFE inputs for compatibility with most receivers Dimensions: 16" H x 14" W x 18.5" D Brushed black polymer veneer cabinet    

  Features: Powerful 10" copper-spun front-firing woofer All-digital amplifier delivers 300 watts of dynamic power Equally impressive with music and movies Low pass crossover and phase control Line/LFE inputs for compatibility with most receivers Dimensions: 14" H x 12.5" W x 15.7" D Brushed black polymer veneer cabinet