Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.
Canvas PE helmet
We provide exclusive customization of the products logo, using advanced printing technology and technology, not suitable for fading, solid and firm, scratch-proof and anti-smashing, and suitable for various scenes such as construction, mining, warehouse, inspection, etc. Our goal is to satisfy your needs. Demand, do your best.
Professional team work and production line which can make nice quality in short time.
The professional team provides 24 * 7 after-sales service for you, which can help you solve any problems
Address：No. 3888, Hutai Road, Baoshan District, Shanghai, China
Remote monitoring of a subject wearing a sports ,helmet, is enabled. In one aspect, an example system includes a safety ,helmet, and a sensor integrated with the ,helmet, for continuously gathering head acceleration force data, the head acceleration force data associated with the head movements of a subject. The system can also include a wireless transceiver coupled to the sensor for transmitting ...
The transformers T1 and T2 both stepdown ,voltage, from primary to secondary in a ratio producing an acceptably ,low voltage, in the hazardous region r. A stepdown ratio of 120:15 has produced acceptably ,low, voltages when the line ,voltage, source is 120 volts, and when resistors R11, R12, R21 and R22 are each of 25 ohms.
The alarming portion generates an ,alarm, sound or displays character data when the alarming portion ,alarms,. There are two ,alarm, sound tones, wherein one for the arrival of the paging signal and the other for informing the ,low voltage, condition. The alarming portion may further ,alarm, when detection of the ,low voltage, condition.
3/12/2013, · An apparatus for annunciating ,low,-,voltage, in a battery supplying electricity to an auto-darkening optical filter system (10) for a welding ,helmet, (not shown), the auto-darkening optical filter system (10) comprising: an optical band-pass filter (110); an LCD shutter (210) in series with the band-pass filter (110); a cover glass (410) covering the LCD shutter (210) and the band-pass filter (110 ...
An apparatus for annunciating ,low,-,voltage, in a battery supplying electricity to an auto- darkening optical filter system (10) for a welding ,helmet, (not shown). ,Low voltage, is annunciated by changing, for example strobing, the opacity of the optical filter system (10).
The invention discloses a ,low,-,voltage alarm, circuit and method. The circuit comprises: a Q1 and a Q2, both the Q1 and the Q2 being NPN type triodes or NMOS transistors; an ,alarm, unit, resistors R1, R2, R3 and R4, a current limiting element, and a resistor R6, wherein one end of the current limiting element is connected with a power source, and the other end of the current limiting element is ...
 FIG. 2 B: Remote device with ,low voltage, sense, audible/visual ,alarm,, RF Receiver, and on/off switch.  FIG. 3: The base device (transmitter) FIG. 1 is sensing the temperature, processing the data, and sends it to the remote device (receiver) FIG. 2 which receives data, processes it, and sounds the ,alarm,.
Alarm,.com (Nasdaq: ALRM) has lost its bid for millions of dollars in damages in a ,patent, infringement case relating to smart home security and automation networking.. A jury found Feb. 8 that SecureNet Technologies did not infringe three of ,Alarm,.com’s ,patents,, awarding no damages in the five-day U.S. District Court for the District of Delaware trial.