STONE. The Stone model, the most experienced member of Arlentus Control Family, is used in several sectors from locomotive to mining machinery to fire trucks to ship cranes, etc. Operating Frequency: 433-434 MHz, 863-870 MHz, 2.4 GHz Modulation Type: FSK, GFSK Radio Communication: Adaptive manual frequency hopping, single or two-way (P2P) Signal Output Power: 434 MHz - 10dBM, 868 MHz - 14dBM, 2.4 GHz - 10dBM Encryption: 128 bit Operating Temperature: -25 ℃ + 70 ℃ Dimension: 300 x 216 x 180 mm Weight: 1.5-2.0 kg (battery included) IP Protection Rating: IP65 Material Type Used: Impact resistant polyamide Battery: 3.7V Li-Ion (3400, 6800, 10200 mAh) Battery Warning System: Yes Battery Usage Time: 48 Hrs Stop Function: PL e, cat. 4 Transmitter Status Indicator: Yes Vibration: Yes EEPROM: Yes Recommended Receiver Units: Flint, Graund Antenna: Internal / External It can be determined according to the conditions of use. Display Type: LCD, 4x20 characters Number of Functions: max. 5 joysticks up to 10 axis, max. 8 finger joysticks up to 8 axis Operating Range: 150-800m It varies to the intended use and frequency.