Rechargeable long range torch

Handheld Megaphone with Loud Speaker, Recorder USB Memory Card Input Announcing Talk Record Play Siren Music, Rechargeable Battery Included-450 W Perfect For Announcements in Colleges, Schools, Drills, Offices, Police, Including Siren Noise Announce, Signal and Siren! Moisture-proof and dust-proof designed function buttons, durable to use. 240 seconds long and high-definition recording with plentiful music & siren sound source. Adopts ABS material to firm the body, more comfortable to hold grab handle according to somatology. Replaceable Lithium Rechargeable Battery 3.7 V supply voltage, with rechargeable battery, safe, stable, durable and long operation life. Capacity of 1200 mah.USB Chargeable, cable provided. Battery can be recharged -recharge unit provided; 1 battery included Function: Talk/Record/ Play/Siren/Music/U disk and TF card slot, Recording time: 240 seconds, Audible range: 500 meters, Rechargeable Battery: 1200 mAh lithium battery, Material: Imported ABS, Weight: 0.5kg 450 watts sound output suitable for large audience. Handle for grip with mini sling. Continuous repeat playback available. Has been utilized by indoor & outdoor fire officers, mentors, police, firefighters, cheerleader, schools, sports activities, occasion organizers and director megaphone want to utilize this minimal bullhorn for various reasons.

Description MDC-K400 Square and Round Billet Taper Measuring Instrument The product description The square, rectangular and round billet taper measuring instrument adopts high-precision displacement sensor as the measuring element, which has high precision and good repeatability. The measuring trolley ensures that the measuring sensor is in the correct position. The round copper tube taper measuring instrument ensures that the sensor is located at the diameter of the measuring section circle. Due to the characteristics of the round copper tube, one measurement action can measure multiple physical quantities on the copper tube section. The square billet taper measuring instrument can arrange measuring points in four directions and can measure straight or curved surfaces respectively, while the rectangular billet taper measuring instrument needs to install six measuring points to measure the taper of multiple faces at the same time. The product features 1. Use a high-precision vector displacement sensor 2. Battery powered, compact and flexible, easy to carry and use, strong anti-interference ability 3. Use wireless communication function and CRC check technology to ensure no error code and accurate signal transmission 4. SPI all-digital interface, programmable 16-bit A/D converter, with program-controlled digital filtering and program-controlled lossless amplifier inside, fully meeting the measurement requirements 5. High-power rechargeable battery, long standby time, suitable for on-site use of mobile operations 6. The measuring body and the display instrument are connected by wireless WIFI communication, which is easy to use The performance and index 1. Measurable copper pipe length is more than or equal to 1200mm, the measurement range of straight surface and arc surface displacement is 0-10mm, and the measurement cavity size can be customized according to user needs