Channels: 6ch rf range: 2. 408-2. 475 ghz bandwidth: 500 khz bands: 135 rf power: <20dbm receiving sensitivity: -95dbm 2. 4 ghz protocol: afhds 2a modulation type: gfsk transfer method: fhss channel resolution: 4096 steps channel delay: <15 msec batterry: aa batteries <4. 4v, 2s lithium battery <7. 4v (not included) antenna: 26mm display: ntn semi-pemeable, segment screen, va52. 5 x 34mm lcd white backlight online update: n / a range:> 200 m (no ground disturbances) channel data parameters: 1500us (median) 900-2100us (area) fs-bs6 receiver rf range: 2. 408-2. 475 ghz rf channel: 135 rx sensitivity: -92dbm 2. 4 ghz system: afhds 2a modulation type: gfsk power consumption: 4. 0-8. 4 v dc (fs-gt5)