The Indicator Bathroom Door Lock is a privacy lock system for public or commercial restrooms. It uses a color-coded indicator window to distinguish internal occupancy. The device uses a rotary mechanism to lock and unlock the door, and clearly displays red "occupied" and green "vacant" signs on the outside, allowing users to intuitively determine restroom status. The lock body is made of high-strength stainless steel with a fine matte finish and a smooth feel, ensuring easy operation and smooth, non-stuttering knob rotation. After installation, the overall appearance is simple and unified, perfectly coordinating with stainless steel partition hardware, making it suitable for high-use environments.

Clear Indication

The dual-color window structure features red and green windows measuring 10 x 3 mm, with a viewing angle range of 110 degrees. Tests show that the identification rate is over 98% within a distance of 2.5 meters. Red indicates occupied, and green indicates unoccupied, effectively reducing misoperation while waiting outside the door.

Precise Transmission

The internal lock cylinder utilizes an integrated stainless steel rotating shaft, with a rotational torque controlled between 0.25 and 0.35 Nm. This provides uniform resistance during operation, ensuring smooth rotation without deflection. Mechanical life testing has proven stable operation after 100,000 consecutive openings and closings, without loosening or sticking.

High Strength and Durability

The lock body is machined from solid SUS304 or SUS316 stainless steel, with a thickness of 2.6 mm. The material has a tensile strength of 520 MPa and a surface hardness exceeding HB200. Compared to conventional aluminum or zinc alloy structures, it offers 40% greater impact resistance, capable of withstanding frequent use and external impacts in public places, maintaining a deformation rate of less than 1%.

Safety Features

An emergency slot on the outside of the door allows for easy opening with a coin or screwdriver, preventing the risk of being trapped in an emergency. The slot is 1.5mm deep and 6mm wide, meeting common emergency standards. An anti-lock feature within the lock cylinder prevents accidental operation from locking the door from both inside and outside, enhancing overall safety.

Corrosion Resistance

The lock body features a matte satin finish, creating a uniform oxide film that withstands 480 hours of salt spray testing without rust. The SUS316 version contains 2.0% molybdenum, providing excellent resistance to corrosion from acids, bases, detergents, and humid air.

Shopping Mall Public Restrooms

Partition door systems used in shopping malls and large shopping centers provide customers with clear occupancy status. Red and green signage reduces queuing errors and improves overall user order. Its high-strength stainless steel construction withstands frequent opening and closing, maintaining smooth rotation over time and meeting the durability standards of large commercial venues.

Office Buildings

This lock system coordinates with minimalist partition systems in office building public restrooms. The matte, anti-glare finish complements modern office lighting environments, maintaining a clean and consistent overall space. Employees can quickly identify occupancy status during use, avoiding awkward entry errors and improving privacy management.

Hospitals

Indicator Bathroom Door Locks are widely used in high-traffic areas such as hospitals. The anti-corrosion properties of the lock body make it resistant to disinfectants and moisture, ensuring stable operation. The emergency release feature ensures quick unlocking in emergency situations, meeting public safety requirements and suitable for sanitary areas requiring supervision and cleaning.

Airports and Subway Stations

Clear indication and high-frequency durability are particularly important in high-traffic public spaces. The lock maintains smooth rotation even after thousands of uses daily. The anti-fouling surface is easy to maintain and reduces management costs. Its robust structure can withstand continuous vibration environment and ensure long-term stable operation.

Surface Cleaning

Wipe the lock body weekly with a soft cloth and neutral detergent to remove stains and water spots. Avoid using chlorine-containing cleaning agents, as they may damage the stainless steel's passivation film. Keeping the surface clean not only prolongs the lifespan but also maintains the clarity of the indicator window and prevents color blurring.

Internal Lubrication

Apply a small amount of waterproof lubricant to the rotating shaft every six months to maintain smooth transmission. After extended use, if you experience increased resistance in the knob, remove it, clean the shaft, and re-lubricate it. Proper lubrication prevents shaft wear, ensures stable torque, and prolongs service life.

Inspection and Fixing

Check the lock body backplate screws for looseness quarterly. If any deviation is detected, tighten them immediately. Loose screws may cause the lock body to wobble or the indicator window to misalign. Ensure that the installation is tight to maintain accurate lock operation and prevent malfunction caused by loosening.

Indicator Window Maintenance

We recommend inspecting the window transparency annually. If scratches or dirt are difficult to remove, replace the indicator plate assembly. Long-term exposure to cleaning agents or high temperature environments may cause material aging. Timely replacement can ensure color recognition and public safety, and maintain overall appearance consistency.