Best Low Oxygen Level Alarm

Wellue Pulse Oximeter Fingertip POD-2 Blood Oxygen Saturation SpO2 Monitor & Pulse Rate Monitor| O2 Meter with Batteries

ACCURATE AND RELIABLE: Accurately determine your SPO2, pulse rate, perfusion index and pulse strengrh in 8 seconds and display it conveniently on a....
ABNORMAL VAULE WARNING FUNCTION: The screen flashes to warn of abnormal blood oxygen level and pulse rate. The SPO2 alarm threshold is 90%. The....
EASY TO READ: Two-color highlight OLED screen displays clear readings..
EASY TO USE: One-button operation for easy use. Automatic power off. Low battery indicator..
WHAT YOU GET: A smart fingertip oximeter. 2 free AAA batteries. The after-sales team will serve you..

Check Stock

FINDER 90.26 Relay Socket, 250V, 10A, DIN Rail

Output can be directly connected to microcontroller, through single chip microcomputer to detect the high and low level, thus to detect whether there is a vibration environment, call the police..
This module is compared with the normally open type vibration sensor module, vibration trigger for longer periods of time, can drive the relay module..
Product vibration, the vibration switch instantaneous disconnection, output the output high level, the green light is not bright.
Product no vibration, vibration switch is closed on state, the output terminal output low level, the green light is lit.
Used to trigger the effect of various vibration, theft alarm, intelligent car, earthquake alarm, motorcycle alarm, etc.

Check Stock

High/Low Water Level Sensor Detector Alarm 120 dB Red Strobe Siren, Adjustable Alarm Volume, Sump Bobber Water Leak Sensor,16.4ft Probe Cord, Suitable for Water Tank/Aquarium, Swimming Pool/Basement

【SHIP FROM U.S.】【Dual Bobber Probes Sensor Design】- It can detect water shortage or overflow. You can choose to use one or both functions according to your needs. The overflow probe is placed above the water level. When the water level rises to the detection position, the float will rise and trigger the magnetic induction, thus triggering the alarm. Instead, the water shortage probe is always placed in the underwater position, which triggers an alarm when the water level drops below the float..
【120 dB with Red Light Strobe Alarm - Volume Adjustable】- The volume of the water alarm can be adjusted according to the installation distance, and the alarm can also be used as a home safety alarm. You can DIY yourself, the alarm will be triggered when the two wires on the probe are shorted..
【Extendable Detection Line】- The detection line of this water detector can be extended to 164ft to meet the needs of your family. Please use good quality copper core extension wire..
【Low Power Design】- 9V replaceable battery power supply, standby for more than 1 year. When the battery power is low, the water sensor sound will become small or there is no alarm sound. Please replace the battery at this time..
【Wide Range of Uses】- This dual probe water....

Check Stock

Handheld Carbon Monoxide Meter, Portable CO Gas Detector, Gas Tester with 0～1000ppm Range, 1PPM Resolution(Battery NOT Included)

...stance and stability, with a low power consumption and high precision..
HANDHELD SIZE: The CO gas meter is compact and lightweight, professional designed to fit comfortable in your palm，easy to carry and operate..
WIDELY APPLICABLE: The Gas detectors can be used to detect combustible, flammable and toxic gases, and oxygen depletion, etc. This type of device is widely used in industry and can be found in locations, such as on oil rigs, to monitor manufacture processes and emerging technologies such as photovoltaic. They may also be used in firefighting..

Check Stock

EMAY Children Pulse Oximeter (Not for Newborn/Infant) | Blood Oxygen Saturation Monitor with Heart Rate Tracking for Kids

Special design for children (age 3 and up) with cozy finger chamber & adorable pattern.
Enhanced sensitivity & accuracy to read kid's blood oxygen saturation level, pulse rate and perfusion index.
Alarm beeps when oxygen or heart rate number drops below threshold..
Please stay still as much as possible and avoid direct sunlight during the measurement, otherwise it will cause inaccurate or inconsistent readings..
For sport and aviation use only, not for medical use..

Check Stock

Wellue Child Pulse Oximeter Fingertip with Alarm Function Oximeter Blood Oxygen Saturation Monitor for kid Heart Rate&SpO2 Monitor with Batteries & Lanyard Pink

Reliable and Accurate Pulse Oximeter. Specially designed for children(age 2-12 years). Suitable for children with finger diameter of 0.3 "-0.44". The....
Abnormal Value WARNING Function. The screen flashes to warn of abnormal blood oxygen level and pulse rate. The SpO2 alarm threshold is 88%. The....
Easy to operate. Just put the finger in to measure, press the button to start, take out the finger to automatically shut down. Your kids can learn to....
OLED display to show clear results. The product is lighter, low energy consumption, and high brightness. The low battery indicator provides escort for....
Suitable for sports and/or aviation purposes.--What You Get: Penguin-looking kids pulse oximeter that appeals to your child. A free lanyard that can....

Check Stock

Alarm, Door Stopper with 120DB Security Alarm, Floor Wedge Doorstop for Travel Apartment Home House

Dual Function: When the power is in "on" status, it will make extremely loud 120db alarm to be used as door stop alarm.
when the power is in "off" status, it can be used as damping rubber door stopper..
3 Sensitivity Levels: Low - Medium - High, with an adjustable switch on the side. H level is the highest sensitive level to trigger 120db alarm.An easy way to make the intruder run as fast as he can!.
Portable Design: Light weight, small size, easy to pack and take.You can carry it as a security measure for your trip. Small but very effective!.
Easy to Use: Powered by 9V battery, no mess cable. One piece can be used for a year under normal circumstances. Simply place the alarm behind door.Battery not included..
Additional Security: Place the alarm behind the door that you want to be alerted in home, dormitory, hotel or motel room while you are sleeping..
Power On: The door stop alarm in “on” status, when door pressure is applied, it will be triggered while make loud 120 dB alarm..
Power Off: The door stop alarm in “off” status, it can be used as common door stopper..
Low - Medium - High, with an adjustable sensitivity switch on the side..

Check Stock

Rechargeable Oxygen Meter Finger Pulse Oximeter, SmileCare Bluetooth Pulse Oximeter Fingertip Blood Oxygen Saturation Monitor with Heart Rate and Perfusion Index with Free App iOS & Android for Adult

Accurate & Easy to Use: One button operation, built-in infrared sensor will instantly start detection and then the measured SpO2(blood oxygen saturation) and PR(pulse rate) will be displayed on the LCD screen within 5 seconds, measurement results within ± 1% precision. Auto power-off after 7 Seconds without any operation..
Warnings for Abnormal Readings Auto Alarm: The value on screen will flash and give auditory alarm when abnormal SpO2 or pulse rate is detected, the oximeter will gives the above alarm to remind you.If you find the alarm annoying, you can turn it off from the app.
Rechargeable Design to Save Money: Rechargeable lithium battery avoid the trouble of frequent battery replacement. Low-power consumption, charged 2.5 hours one time can be continuously used for 18-20 hours..
Lightweight and Portable: SmileCare fingertip pulse-oximeter very light and easy to carry, this oxygen finger monitor is attached with detachable lanyard.
User Friendly Design with Drop Resistant Design:Upgraded structural design at the joint parts with wide range of finger size，inside soft silicone finger holder and drop-resistant design makes sure a longer usage life and more comfortable experience..

Check Stock

Govee Water Detectors 5 Pack Bundle with WiFi Water Sensor 2 Pack, 100dB Adjustable Alarm and Smartphone App Notifications, Water Leak and Drip Alerts by Email, Water Detector for Home Bedrooms

Real-time Alerts: Connect the gateway to WiFi and instantly receive app notifications and alerts to your phone, plus emails to your inbox, when water leakage is detected. Stay informed even outside the home. Water sensors and included gateway are paired right out of the box. Note: Only 2.4Ghz WiFi supported.
Loud Alarm with Mute: When WiFi notifications are unavailable or an audible alert is needed, the 100dB on-device alarm can play throughout the home. Press the Mute button to silence the alarm. If the leaked water is still on the sensor after 5 seconds, the alarm will sound again. The alarm will stop once the sensor is dry..
Low Battery Alert: The water sensor alarm will beep and flash red light when battery is low, or press the button on it to test the battery level..
Connect More Sensors: The WiFi Connection Gateway provides strong and stable signal transmission & lets you connect up to 10 sensors simultaneously for full home coverage..
IP66 Waterproof&Low Battery Alerts: The completely sealed IP66 waterproof design allows for extended use in high moisture environments. The water sensor alarm will beep and flash red when battery is low, or you can also press the sensor's button to find the remaining battery level..

Check Stock