Electromechanical handle FIX 7810 for terrace doors to be locked from inside only. Spindle of 8 mm square steel, length 53 mm. Left cranked. Material: satin chrome. The locking mechanism is operated with five buttons: four buttons to press a six-digit code to unlock and one button to lock. Green light flashes when the buttons are pressed for unlocking and red light flashes when locking. Supplied with a standard code which can easily be changed by the operator. The code is constant at voltage drop or battery change. Supported by 2 pcs. 3-Volts lithium batteries, CR2, which gives approx. 100.000 operations. Red light indicates low battery when approximately 500 operations left.