... recording machine,punched-card machine, ARM Processor ER-881 attendance machine (RFID multi-function attendance machine)Product profile ... fire-resistant PVC material, designs simple and convenient. ER-881 is a fully functional, performance, excellent attendance machine.Product ... .Volume: L200mm×W130mm×H46mm10.Gross weight: 550g. ER-881 Multimedia Time Attendance rol,ARM Processor,support M1 card, ...