Epsilon Electronic Equipment & Components Pvt. Ltd. Supplies Emergency Portable Control Telephone. Epsilon Electronic Equipment & Components Pvt. Ltd. Manufactures signal & telecom items for the Indian railways. Emergency Portable Control Telephone is suitable for use in 2 wire or 4 wire system. Emergency Portable Control Telephone works on 3VDC dry battery conforming to IS: 9128, type R-20. This control telephone has 6 pin flat plug as per IRS: TC-42/87.
