Notice:
1.Here is the laser engraver with this laser tube for your reference:
2.To purchase a laser tube,please confirm your machine's installation space,like the diameter and length,all should be a little bigger than laser tube's size
Introduction 
Model:CO2-TUBE-50W-80CM 
Output Power:50W 
Wavelength:10600nm 
Working Voltage:15KV (Trigging Voltage=22KV) 
Working Current:18mA 
Divergence:1.95(beam diameter) 
Dimensions:Length 800mm 
Input voltage: AC 220V+30 or AC 110V+20 (to be specified when placing order). 
Maximum output voltage:DC25KV (40W;50W) / DC28KV (60W) / DC35KV (80W) 
Maximum output current: DC20mA (40W;50W)/ DC23mA (60W) / DC28mA (80W) 
Isolation Withstand voltage: Input-output, input-enclosure: AC2000V- 10mA-60s; negative pole of output connected to enclosure. 
Protection: with well-grounded enclosure, output circuit of power supply can be open for short time (but arc between positive pole and enclosure should be avoided). 
Response time (from time of input being available to the output current being up to nominal value)<1ms 
TTL voltage level control: effective voltage level can be high or low through setting. 
Protection switch: for detection of cooling water, to protect laser device; or activate with enclosure is opened. 
Laser power adjustment: (1) by adjusting the output current of power supply through resistor; (2) through PWM control (magnitude being TTL voltage level). 
Environmental requirements: temperature (-10 to 40 centidegree), relative humidity<85%.