E2010 Two-way controls. Supports all the features available in the product line. Control your sirens individually, in groups, or altogether. Every transaction is logged with time and date stamp. Hard drive archive all activity. Selective information relative to status accessed by date or location. Automatic system polling. A variety of call keys available, programmable to any scenario. Four remote input call keys. Two time of day call key activators and two contact closure outputs for alarms. Security key lock. Printer port. Battery back-up for time and date features. Desktop and rack mounted configurations available. E969 One-way control. Control your sirens individually, in groups, or all together. 35 function capability. Four Call Keys on keyboard provide simple and fast two-step activation of most warning scenarios (Select Call Key, Press Send). E747 One-way control. Control your sirens individually, in groups, or altogether. 18 function capability. May be used for mobile applications. VA2000 Extends the reach of the Whelen system. Addressable similar to a siren, it will react when receiving the DTMF signal just as a siren would. Upon activation, it will sound a piercing alarm, flash an LED and display one of 60 pre-programmed messages.