Best Electronic Trip Wire Alarm

Hahiyo YMD-12095 Electronic Buzzer Alarm 5V DC 12x9.5mm Beep Continuous Sounder Active High Plenty Loud Tone Piezo Siren Security Audible Easy to Install with Wire for Horn Siren Alarm 12pcs

Secure.The electronic buzzer will make a loud and continuous tone when powered.The sound like a car alarm.The sound above the engine can be heard from....
Work well over the rated voltage range.If you think it's better to have a lower voice,there are several ways.The first,add a little resistor or two to....
Functional.The beepers works great as a replacement piezo speaker to an old KMC alarm clock.Used these to extend an alarm to all levels of the....
Easy to wire them in circuits,drive from TTL or other low voltage application.The circuit board wire bonding process is robot welding and automatic....
The plastic shell made of high-quality ABS material is environmentally friendly,flame-retardant,anti-aging,wear-resistant,strong and durable.The upper....

PLL AM/FM radio with preset stations: AM/FM radio stations can easily be located with a digital scan so you can start listening to your favourite station by the preset functions. External FM wire antenna improves the FM radio reception..
Dual Alarm Setting with Sleep and Snooze: Dual alarm setting (wake up by buzzer or radio) is easy and the alarms are independent, so both bedmates need only this one alarm clock. SLEEP TIMER allows you to listen to the radio/music while you fall asleep. Whenever the alarm activates, it can be suspended for a short period of 9 minutes by pressing the SNOOZE button once..
Green LED 1.2 inches display: Clear display for ease of use. Very Suitable for family with the elderly and children.
Dimmer function and electronic volume control: You can control the brightness of the LED display..
AC/DC adapter included and memory backup: In case there is a shortage of power, the memory backup function will store all the setting. You do not need to set everything again once the power is resumed..

【Battery Backup Setting】This digital alarm clock just support outlet power only, 3 AAA batteries (not included) just be used to back-up your time and memory preservation so that you don't need to reset time after encountering power outage. Under the power outage, the light source of the electronic clock will not light up.

【HUD 】WHY HUD? My car dashobard has speed.「When driving speed at 60MPH, head down for 1 second, like a blind to drive for 16.67miles. 」This is....
【HUD GPS】it's a universal digital speedometer GPS HUD for all cars, collecting driving speed time and all other info from GPS satellites, USB....
【HUD Display】this HUD can display car driving speed, real time clock, trip driving distance, trip driving time, GPS signal and altitude. 6 kinds....
【HUD Alarms】Fatigue driving alarm and over-speed alarm. Over speeding alarm include 1 level speed alarm or 4 level speed alarm 60-100-120-180,....
【Popular HUD】Classic blue and white, driving speed and time/speed/altitude/tip time/trip distance. First time usage, pls take off the screen....

★ Battery Model Number : A6BAT Battery- Size 2/3A 3.6V Lithium Battery.
★ 3.6v lithium battery with wire lead and connector ,2 wire 2-pin connector.
★ Battery- Size 2/3A 3.6V Lithium Battery ； Dimensions battery: ø17 mm x 33.6 mm.
★ Other applications: Alarm system, PLC memory backup power supply, CNC system, servo motors, machine tools, instruments, special electronic equipment, etc..
★ Package Included: 5 x A6BAT ER17330V PLC Battery.

Makes for easy temperature reading/management with electronic controls inside.
Environmentally friendly design with no ozone-damaging chemicals.
Stainless steel handle adds style to any setting. Alarm sounds if temperature goes out of recommended range after 2 hours. Optional feature disables alarms, interior light, and displays for up to 96 hours.
User-reversible door swing makes it easy to best accommodate your setting.
Four shelves (3 wire, 1 glass) provide space and flexibility when organizing the interior’s contents.

Package: 5pcs DC 3-24V Electronic Buzzer +5pcs T Type 9V Battery Holder Clip Connector..
Buzzer Wire length: Approx.12cm,T Type Battery Holder Clip Wire length:Approx.25cm.The structure of product is compact that provide excellent....
The buzzer features low voltage and low power consumption,this module is ideally suited to adding sound to your project..
Easy to install,good conductivity,good contact performance,long service life..
The battery clip is suit for 9V batteries with two wire connection,suitable for connecting battery,multimeter,alarm apparatus, etc..

SENSITIVE FISHING BITE ALARM: These electronic fishing bite alarms are designed to alert you when a fish is hooked. It is sensitive enough that it....
DUAL ALARM DESIGN: This electronic fishing indicator will alert you by a loud alarm sound and a bright led indicator at the same time when a fish is....
10 SPARE BATTERIES: Each electronic fish alarm is equipped with 3 LR44 button batteries, which can be used for up to 100 hours. The package also....
EASY TO INSTALL: You just need to clip this fish bite alarm on your fishing rod, then wrap the fishing line around it and turn on the power switch.....
WIDE APPLICATIONS: The fishing alarm can be used for many different types of fishing rods. Suitable for sea fishing, ice fishing, fly fishing, kayak....

...l ,German car is near the dashboard, American pickup truck is in the inspection cover..
[Note] OBD2 devices are not compatible with American gasoline car that produced after 2004 and accord with OBD2 protocol,Other districts gasoline car that produced after 2008 and accord with OBD2 protocol..
[Function] HUD can read electronic control unit data of the whole car. Such as Voltage, Mileage, Water Temperature, Driving Speed, Instantaneous fuel Consumption, Average Fuel Consumption, Rotational Speed, Engine Temperature,Over Speed Alarm, Rotational Speed Speed Alarm, Engine Fault, Engine Temperature Alarm, Battery Voltage Alarm etc..
[2.2 " TFT LCD Mini High Definition Display Screen] 2.2'' TFT LCD screen displays the information more clearly and the screen color can be adjusted freely. No need to stick any reflecting film on your windshield..
[Easy Installation] Find out the OBD interface in your vehicle. (Japanese car is under the steering wheel ,German car is near the dashboard, American pickup truck is in the inspection cover.) Link the HUD plugs at both ends with cable wire,turn it on and play..