Door Stop Alarm BY HIPHEN SOLUTIONS This security device fits under any door like an ordinary doorstop, yet it lets out an extraordinary alarm sound. The rubber bottom won't slide on smooth surfaces, so it can be used on floors or carpeting. This brings added safety for hotel travel, school dorms, seniors, or anyone living alone. The Door Stop Alarm is easil...
The lower-speed centrifugal machine with the maximum speed 4000r/min, mainly be used for the appraisal of radioactivity immunity and Separation of cell or particle.- Timing function, timing range from0~60 minutes.- Speed control function.- Rubber suction feet help the machine stick on table firmly and work stable.
