Will this take the temperature of a child's fever also?

Please note that the infrared lasergrip thermometer units are not intended for human use. When measuring human skin, it will not provide a medically-accurate reading. Rest assured, it is not harmful, but will also not read internal temperatures accurately. They will only measure the surface of an object, and are designed more for industrial or household use (ovens, pipes, machinery, car parts, etc).

Does this unit have an auto shut off feature?

Yes, if the trigger isn't pressed for like 10 seconds or so, then it will shut off. I usually take out the battery when I'm not using it.

Is the black casing for the gun made of easy-grip rubber or a smooth hard plastic?

Mine is not "easy-grip" rubber. It is made of hard black plastic which is smooth. Very comfortable and light weight.

Would this instrument reliably measure the air temperature of a car interior? Would the windows need to be cracked, or would the glass not affect it?

No, not directly but will measure a solid object to infer air temperature next to the object. This device's sensor measures infrared energy radiated by an object and converts to temperature. Air does not absorb or emit IR energy so it will not register on the device. To measure air temperature directly you would place a direct measuring device, such as a thermometer or gauge in the car with the window up.

What are the benefits of having two laser pointers?

The instrument shows temperature averages for the target area. The area is larger when you are far away, and smaller when you are close. The dual pointers give you a rough idea of what area is being measured.

Can this be used to search for cold air entering a house? (ie around doors, windows, outlets, etc.)

As noted in answers to other questions, the device reports the average temperature within the area covered by the cone. To get a good idea of air infiltration through gaps, you need to get close to the gap and compare readings along the seam or between seams to get a good idea of where the leaks occur.

Does this work on internal meat temperatures ?

If you cut the meat in half you might be able to take the surface temperature of the meat, but then your meat is going to be cut in half and that's not real appetizing. Blue cheese is very appealing, maybe some bacon.

User Manual Etekcity Lasergrip 774 Non-contact Digital Lase

Etekcity Lasergrip 774 Non-contact Digital Laser Infrared Thermometer - Use Manual - Use Guide PDF.
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Owner's manual - (English)

Table of contents

Features & Specifications
Function Diagram
Operation

Thermometer User Manual

Safety Use & Care

• DO NOT point the laser-light at another person or animal.

• DO NOT attempt to point laser-light at an aircraft.

• Avoid direct/indirect eye contact with the laser-beam. Laser radiation may cause eye damage.

• DO NOT view the beam with optical instruments.

• In the vicinity of use, make any bystanders aware of the dangers of looking directly into the laser beam.

• DO NOT allow children to operate the device.

• Use a 9V battery when replacing the battery within the device. Make sure to insert the battery in accordance with the correct polarities.

• ALWAYS remove the batteries when cleaning the device.

• DO NOT use leaking batteries or dispose old batteries in fire.

• Remove battery for storage if the device is not being used for a prolonged period of time.

• DO NOT disassemble the device or tamper with internal components. Doing so will void any warranty.

• DO NOT touch the lens or wipe it using anything other than a soft cloth or cotton swab.

• Keep the thermometer away from electromagnetic fields produced by objects such as arc welders and induction heaters.

• DO NOT expose the thermometer to direct sources of heat for extended periods of time.

• The thermometer measures surface temperature, not internal temperature. Do not use the Lasergrip as a reliable source to measure body temperatures.

Features & Specifications

Laser guided targeting for aiming precision
Narrow distance-spot ratio for accurate results at greater distances
Safely measure hazardous or inaccessible objects
Standard 9V battery powers up to 12 hours of cumulative use Auto-off after 15 seconds of inactivity
Measurement range -58°F 716°F (-50°C ~ 380°C)
Accuracy ± 2% / ± 2°C
Maximum Output: < 1mW
Wavelength: 630 - 670nm 12:1
Distance-Spot Ratio: 12.1
Response Time: < 500ms
Emissivity: 0.95
Battery: DC 9V

Function Diagram

LCD Display
Unit Switch Button (°C/°F)
Laser Pointer On/Off
Display Backlight On/Off
Measurement Trigger
Battery Compartment
Laser Hole
IR Sensor

Operation

Surprise temperature measurement

Note: The Lasergrip cannot measure the temperature of objects behind glass, inaccuracy may also occur when exposed to steam, dust or any other contaminants in the air.

once the battery is properly installed, press the measurement trigger to activate the device
point The lasergrip towards the surface of measurement
press and hold the measurement trigger and and the laser will activate for aiming guidance
once the laser is pointed to the desired point of measurement, release the trigger and the LCD display will lock the calculated temperature
press the measurement trigger again to make another measurement once again to make another measurement

NOTE: The lasergrip LCD will display ‘HI’ when the measured temperature is above the measurable range, display ‘LO' when the measured temperature is below the measurable range

Unit Conversion

Laser Activation

Display Backlight Operation

Battery Replacement

A low battery icon will appear on the LCD display when the Lasergrip's battery power is running low. Immediately replace the battery when the icon appears.

1. Open the battery compartment and remove the used battery. Dispose the used battery properly.

2. Connect a new DC 9V battery, making sure it's under the correct polarity.

3. Insert the battery into the compartment and close the compartment lid, making sure the wiring is not being pinched by the compartment lid.

Distance-Spot Ratio

The Lasergrip 774 measures surface temperature on the basis of distance to spot diameter ratio (D:S). As the distance between the thermometer and the surface increases, the total surface area measured will also increase. With a distance to spot ratio of 12:1 the surface area measured has a diameter of roughly 1/12 the distance.

For the most accurate results, make sure the target has a surface area of twice the corresponding spot diameter. Insufficient surface area will result in inaccurate results. The recommended distance to hold the Lasergrip from the surface of measurement is 14.17in (36 cm). This creates a spot measurement area of 1.18 inches (3 cm) in diameter.

Distance (D) to Spot (S) size D:S = 12:1

Emissivity

The emissivity of a material is its efficiency in emitting thermal energy. Non-reflective surfaces have a higher emissivity (closer to 1) than reflective surfaces (closer to 0). Inaccurate results may occur when measuring reflective surfaces such as glass, polished wood, and granite.

To take accurate temperature measurement of reflective surfaces with low emissivity, place a strip of masking tape over the surface and allow for it to adjust to the temperature of the surface for approximately 30 minutes. Measure the surface, scanning the taped section, eliminating the issue of inaccuracy.

See other models: EM-SF3 EAP1-AC LASERGRIP 1080 (NOT FOR HUMAN) Voltson ESO15-TB

User Manual Etekcity Lasergrip 774 Non-contact Digital Laser Infrared Thermometer