Features 1、PRODUCT PARAMETERS: Double row 4 digit counting, red digital display, can count 9999, can count positive and negative, double relay control 2、AUTOMATIC ALARM: Can be connected to the alarm clock, support early warning setting. After reaching the preset value, the alarm automatically alarms, and can be set up automatic reset, convenient work 3、WITH MEMORY FUNCTION: In case of sudden power failure, the machine will keep the value before power failure after power recovery 4、FULL AUTOMATIC OPERATION: With two relay inputs, AL1 and AL2, you can connect the entire line to control other equipment for fully automatic operation 5、WIDE USE: Used to record the length of cloth in cloth factory, textile factory and garment factory, can also be used in printing factory and so on Specification Item Type: Digital Length Meter Model: BEM48 30C4 L CT Count Range: 1-9999 Input Mode: Contact signal or pulse signal Control Mode: Relay contact output Preset Or Not: Yes Package List 1 x Digital Length Meter 1 x Support 2 x Accessories 1 x User Manual