I. Overview 
 Preset number of alarm meter (Model: RH-18), mainly the length of the measurement of thin films, copper strip, cable, cloth, etc. can also be used to point number (such as 100 cm, 200 components, namely, the total length can be the total number of points) comes standard with the MR-2005 meter wheel has the following characteristics: 
 After power-down data protection 
 Whether normal power off or sudden power loss, the Comptroller device can automatically data protection and long-term preservation, the power of the original value. Power-down protection chip, no batteries, no maintenance. 
 (2) a number of preset functions 
 Preset length: 
 The keyboard input panel length (unit: cm), when the meter to the length of the Comptroller device, the output control signal. 
 Preset alarm function: 
 Comptroller device count to a preset length, output the alarm signal to alert the operator to preset length, please be prepared. 
 Preset control signal output 

 3 can be applied to a variety of sensors 
 This device can be applied to the photoelectric switch or electromagnetic proximity switch as a measuring sensor. The number of electrical pulses of the sensor output is proportional to the length of the electrical pulse into the instrument by the cumulative computing to get the length. Cumulative length of the set value, the output alarm and control signals. 

 Two technical indicators 
 Total length: 0 ~ 999 999 cm 
 Cumulative length: 0 ~ 999 999 cm 
 Working voltage: AC220V 
 Ambient temperature: -10 ℃ -50 ℃ 
 Power consumption: less than 10W 
 Controller size: 16 (width) x 7 (height) x 12 (D) cm