1.5L Dual Digital Display Automatic Lubrication Pump Oiler NC Pump 6mm 110V Easy installation, simple wiring direct access to 110V Can replace the manual pump, pump intermittent pre-TM;2. Built-in oil pump buzzer alarm to remind Intermittent working time set free, straightforward operation. Set working hours range (1-999 sec There are visual oil level gauge and automatic detection devices, when there is insufficient fuel Recommend the use of N15 # -N68 # lubricants (oil) rail oil