Features 7.5 minutes of user recordable memory Select from user recorded messages or four pre-recorded on-hold pacifier messages Three playback options: on demand, continuous, and timed intervals Non-volatile memory (no batteries required) Built-in 2 watt amplifier to connect directly to speakers Record from electret mic, carbon handset, tape, CD, PC sound card or any line level device 600 ohm audio output for high wattage amplifiers Multiple message capabilities (total number of messages only limited to maximum record time) AGC (Automatic Gain Control) for trouble free recording Auxiliary audio (MOH) input for between message background music Remote trigger input for on-demand playback from a remote contact closure Press and hold play mode Status LED for record and playback indication Master and auxiliary input volume controls I.O. communications port (allows only one DVA-2WA to announce at a time) Specifications Power: 120V AC/12V DC, 500mA adapter provided Dimensions: 133mm x 89mm x 44mm (5.25" x 3.5" x 1.75") Environmental: 0 degC to 32 degC (32 degF to 90 degF) with 5% to 95% non-condensing humidity Frequency Response: 100-3.4KHz Sampling Rate: 64K (equivalent) User Message Length: 7.5 minutes maximum Recording Audio Input Level: 30mV - 1.0V RMS (AGC range) 600 Ohm Audio Output Level: 0.3V RMS maximum (across a 600 ohm load) Speaker Output Power: 2 watt peak Connections: (1) 6-position cage clamp terminal block, (3) 3mm (1/8") audio jacks, (1) handset jack Pre-recorded Pacifier Message Length: 30 seconds total Minimum Speaker Impedance: 2.66 Ohms: (3) 8-Ohm speaker