Frequently asked questions
Is the laser that I am using dangerous?
Laser users should be aware of the risks involved with their equipment. Not all lasers present the same hazards. Proper understanding and training of the particular laser being used, and its dangers, is necessary to avoid injury.
Lasers with visible beams are categorized into four classes.
These relatively weak lasers are not a skin or burn hazard. They do not cause eye damage unless someone stares directly at the beam.
These low powered lasers are not a skin or burn hazard. Laser protective eyewear is generally not necessary.
These lasers are not a skin or burn hazard. Laser protective eyewear appropriate for the beam’s power and wavelength is recommended.
These lasers can burn skin and cause permanent scarring. Some types of material will burn. Laser protective eyewear is essential.
Infrared lasers, used commonly in industrial settings, pose invisible risks to the user. The eyes cannot detect infrared, so they must always be protected from exposure.
Federal Codes of Regulation (CFR) in the US and IEC codes internationally define laser classes and impose required safety regulations. They mandate manufacturer warning labels and outline specific safety measures for laser operators. American National Standards Institute (ANSI) provides control measures for laser hazards in the US. For example, ANSI Z136.3 provides guidance for the safe use of lasers in health care. ANSI Z136.9 provides standard policies of safe use of lasers in manufacturing environments. EN is the European standard.
Certified Laser Safety Officers (CLSO) ensure that compliance with all standards are being met. They can recommend appropriate laser safety eyewear and signage that warns that lasers are in use. Window coverings, such as laser curtains, blinds, or shutters must be in place to prevent laser radiation from escaping through the glass.
RT Technologies can provide CLSOs for consulting services and laser safety auditing. We also offer customized laser safety training courses. RT Technologies offers accredited testing for all laser products and provides US and international laser product certification and registration services.
Is my laser OSHA compliant?
The Occupational Safety and Health Administration (OSHA) was created by Congress as part of the Occupational Safety and Health Act of 1970. The purpose of OSHA is to assure safe and healthful conditions in the workplace. OSHA sets and enforces safety standards, as well as providing training, education, and assistance. Most private employers and their employees in the U.S. and its territories are covered by the OSHA act.
OSHA mandates specific standards for laser safety. The standards recognize hazards to the eyes and skin from exposure to direct or reflected laser beams as well as fire hazards. Unprotected exposure to lasers can lead to permanent eye injury and serious burns. Full OSHA standards for laser system compliance can be found at www.osha.gov.
Federal law requires lasers and laser systems to be classified and labeled by the manufacturer. These classifications provide a warning to the user of the hazards associated with the laser’s radiation. The product should be clearly labeled. There are four classifications of lasers based on potential hazards from exposure.
Specific laser safety products must be used in the workplace to protect against hazardous exposure. Certified industrial laser enclosures have laser containment systems. Laser beam shutters and beam dumps are designed to prevent accidental exposure. They are generally controlled by a laser interlock control system that can be operated manually or automatically. Laser blinds, curtains, and screens provide a physical barrier to prevent radiation from escaping through windows. These safety products are often used in hospitals, labs, and production facilities. They should be labeled for compliance standards, which may include U.S. ANSI specification or EN or CE Marking (European Conformity).
Laser safety eyewear comes in a variety of styles including glasses and goggles. Lenses may be glass or polycarbonate. Eyewear should be chosen to block the appropriate wavelength and optical density of the laser beam. The laser’s operating manual may list recommended eyewear. Eyewear should also meet ANSI or CE requirements.
RT Technologies can provide Certified Laser Safety Officers (CLSO) for consulting and to provide laser safety auditing services. RT Technologies also offers customized laser safety training courses that are eligible for American Board of Industrial Hygiene (ABIH) credit.
Do you give an educational discount?
Yes we do! We have supplied LED signs, laser blocking curtains, blinds, laser safety interlock systems, laser beam shutters, optical table guarding, LaserSafe PC Software, and eyewear to many universities and colleges. Contact us and we will provide you a quote with your educational discount!
Do you offer a sign I can customize with my own wording?
YES—All of RT Technologies LED Signs can be delivered with a custom display. The LEDS Mini, ULTRA 470, 580 and 790, Illuminated and the SLIM JIM signs can all have customer specific displays configured. There is a one-time charge for each specific display message (subsequent signs ordered with that specific message do NOT have to pay the customization fee!)
Do you offer a sign that will work with a bathroom light switch?
Yes we do! Our Slim Jim sign can be hard wired (110V) to the light switch for your bathroom. When someone turns the light on – the sign will come on. When they turn it off, the sign will turn off. Some of the occupancy messages we offer for Slim Jim signs are as follows:
Room In Use
Do Not Enter
It's rainy here! Do you have a waterproof LED sign for outdoor use?
RT Technologies carries the Ultra 580 IP66, an outdoor sign that has dual messaging capability. A customized message can display in red, and then a second message can display green. For single messages, in addition to red and green, other colors (Blue, White, Yellow, Pink) are available. All messages are secret until lit. Outdoor signs must hold up in harsh weather conditions. The Ultra 580 IP66 is designed to withstand wind and rain, successfully keeping out water droplets even when subjected to powerful water jets. It is also sealed to prevent the ingress of dust. Dirty screens are harder to read, and dust and dirt may reduce light output.
If your business is considering installing or replacing outdoor signage in 2021, consider upgrading to a weatherproof LED sign. It can provide a good return on investment in just a short time.
Do you sell directly to the public?
Yes, we do. Please contact us for any sales opportunities in the U.S., Canada, Mexico, and all other North American countries.
Can your LED signs be plugged into a wall?
Our LED signs are meant to be hard-wired to a switch or an interlock system. Our Mini and Ultra LED signs run on 24V. If you only have 110V power available, we offer an optional power supply / switch that converts 110V to 24V. Our Slim Jim LED signs run on 110V, they can be directly wired to an existing light switch. We do have the option of wiring a cord with a plug that you can plug into the wall. This will only work on the 2 state (1 message) signs.
Do your curtains protect against all types of lasers?
Our laser blocking curtains protect against most lasers, but not all. Are you cutting car parts out of metal? Then, you would most likely need an enclosure. We can help you with that! Send us a spec sheet of your laser and we will let you know what we have that can protect you.
What voltage do I need for the LS-10-12 shutter? And is it gravity drop?
The LS-10-12, only works on 12v-24v. Once the shutter receives this voltage input the buttons on the unit allow it to be operated. The unit is a gravity drop shutter, this means if the supply is removed when the shutter is open (assuming the shutter is in the correct orientation) the blade will drop automatically.
The shutter can be configured in such a way that when the voltage signal is received it will automatically open. We sell distribution stations that allow remote open close function.
Can we use a sodium hypochlorite product to disnfect the blinds?
Yes, you can use the product to disinfect the blinds.
Can I operate multiple motorized blinds with one dry contact switch?
The blind motors work on pulses and it seems that when more than one blind is on a switch they interfere with each other and do odd behavior.
If you use 24V dry contact then you need one switch for each blind.
If you want one switch for all blinds in one room, then the motors must be wireless and you must use a wireless motor.
Is the power supply for the LED Mini sign UL rated?
No – But it can be supplied with an external power supply “brick” module (similar to laptop computer power supply) that is UL rated.
Can you supply HVAC with your laser enclosures?
Yes – We provide customized solutions based on specific application requirements.
Does your company supply installation services?
Yes. For an additional cost, we can provide installation services.
When do I need a CDRH Report?
You will need a CDRH report when you are reselling your laser system. If you are selling a laser (3rd party integrator) that is contained in a metal room, box, etc., then you will need the CDRH report.
Can the ICS-6 Interlock Controller be used with seperate labs and multiple lasers?
Yes, it can – BUT – If the interlock controller is tripped in one lab, the lasers in ALL the labs will turn off at the same time. If there are different projects going on in different labs, you will need one controller per lab.