Tycon RemotePro 24V 25W, Continuous Power, 50Ah Batt, 160W Solar Part# RPST2424-50-160 RFID Coded Key Chain FOBs for GDS3710 (100pcs)Grandstream This DVR also has a

This DVR also has a built-in DVD burner and support up to 4 internal SATA hard drives

2 relay outputs (NO & NC)

8190 uses a four-speaker array with asymmetric sound dispersion

You will need to order this part# 51005172 in order this should work Properly

3G CH39 1546

Tycon RemotePro 24V 25W, Continuous Power, 50Ah Batt, 160W Solar Part# RPST2424-50-160 RFID Coded Key Chain FOBs for GDS3710 (100pcs)Grandstream This DVR also has aRemotePro 24V 25W Continuous Remote Power System,160W Solar Panel & Mount, Steel Enclosure, 24V 51Ah Battery, 24V PoE Voltage, 24V 30W Aux Features Complete Remote Power Solution for Off Grid Operation Weatherproof Outdoor Enclosure Enclosures can be Wall or Pole Mounted High Performance Sealed Lead Acid Batteries PWM Charge Controllers Thermostatically Controlled Ventilation