Check the listing for details. KeyReader RF03ID - RFID reader 125kHz. Condition: New. Listed at 77.50 USD. KeyReader is a device that allows you to control electrical relays using electronic keys: for RF03ID: EM UNIQUE standard (EM4100) with a frequency of 125 kHz, in several working modes. Key Features of KeyReader: Supply voltage 12-30VDC (+/-10%)Supply current 12-110mARelay contact - Max.30VDC / 1A / 30WProtection IP51Simple robust design - stainless steel and plasticUp to 500 programmable keys and 5 MASTER keys3 functions – Monostable, Bistable and Automatic buttonIndependent input with LED indication (Input supply voltage - Bipolar 5 - 30 V DC)Connection - screw terminal block (30-16 AWG)Mounting hole ø32mm, with plate thickness from 0.5mm to 3mmCompatible with EM4100, EM4200Easy to set up and upload user keysDeleting individual keysVarious types of key chains / cards / bracelets etc Downloads: www.wayto.cz/keyreader-rf03id/