Because product packaging is a small bag to put pen to page after the zipper would be more crowded, if the battery is dead then flip the pen to take down the page is likely to result in the bag for a long time in the pen laser light (power ) state, so the battery cost will soon finish.
Green 5mW laser pointer requires better materials. Solution: do not remember when to take the battery down and then flip into the pen in a small bag, or one term of a battery of positive and negative reversed.
In addition, flip pen into the bag to avoid the rubber band when you flip the pen to suppress any key, or press a long time and thus may affect the use of accelerated aging keys.
D, laser safety management measures
Warning: Laser eye cause damage, prolonged exposure to the eyes in particular, the extent of damage may reduce eye sight, or even blindness.
Solution:
1, management and use of laser pointer must be professional (staff) personnel to carry out, without the training and education personnel are not allowed to use the green pen open, especially to children must not play.Therefore, the green 200mW Laser Pointer is relatively expensive.
2, when using the laser pointer, laser highlights please try to move within range of the projection screen, the laser beam path should be absolute to avoid standing or sitting when the normal eye sight.
3, use the laser pointer to develop good habits, not laser pointer according to the instructions, please do not just let go, otherwise your hands will probably unconscious movement to other people's eye laser.
E, after-sales service:
Product quality (not to disassemble, battery leakage, Shuaidie, flooding, etc., under the premise), three year replacement warranty. Only a few of workshops produce green Green laser pointer.Disassemble, battery leakage, Shuaidie, flooding and other man-made causes of loss, or the warranty period, maintenance costs will be charged.
F, Note: Please backup the files in the computer hard drive to prepare for contingencies.
Radio frequency (RF) Radio Frequency is the acronym that can radiate into space, electromagnetic frequency, frequency range from 300KHz ~ 30GHz between. The first generation of 100mW laser pointer only has the laser function. RF referred to as RF radio is radio frequency current, it is a short wave high frequency AC changes. Changes less than 1000 times per second, called low-frequency alternating current, more than 10,000 times the known high-frequency current, while the radio is such a high frequency current.
RF transceiver core circuit
RF is Radio Frequency, usually abbreviated as RF. That can radiate into space, electromagnetic frequency, frequency range from 300KHz ~ 30GHz between. RF referred to as RF radio is radio frequency current, it is a short wave high frequency AC changes. Red Blue Laser Pointer is commonly used nowadays in daily life. Changes less than 1000 times per second, called low-frequency alternating current, more than 10,000 times the known high-frequency current, while the radio is such a high frequency current. Cable system is the use of radio frequency transmission.
