Additional Monitor for Wireless Video Door Phone

Model Number: DP-236-MQ
Additional Monitor for the DP-236Q Wireless Video Door Phone. Use up to three monitors for viewing anywhere in the home. 
Display 3-3/8" (86mm) TFT
Operating Voltage 5VDC (adapter), 3.7VDC (Battery)
Current Draw Active- 250mA@4.2VDC, Standby-5mA@4.2VDC
Battery Life Active- 4.4 Hours, Standby- 220 Hours (9 days)
Operating Frequency 2410.875~2471.625MHz
RF Power 120mW
Wireless Range 492' (150m)*
Dimensions 5" x 3-3/8" x 7/8" (127 x 85 x 22 mm)
Weight 3.9-oz (110g)
Operating Temperature 32º~104º F (-0º~40º C)