ACETECH Airsoft Chronograph - High Precision BB Speed Tester with LED Display for Airsoft Guns | Perfect for Field Testing & Tournament Compliance

Acetech is founded by former Xcortech team members to build better airsoft related electronics Support Micro-USB (5V/0.5A) power input (no battery charge function) or Use AA alkaline battery*2 Measures Muzzle Velocity from 30 m/s ~ 400 m/s (90 ft/s ~ 1200 ft/s) Ammo parameter setting supports 5 memory slots Ammo parameter setting from Weight: 0.01g ~ 9.99g Caliber 4.5mm ~ 18mm 25 memory slots for velocity and ROF (Rate of fire) Idling and low battery auto power off function. FCC, CE, RoHS compliant Tripod Ready mounting hole (Screw for standard camera / camcorder tripods ) Support Micro-USB(5V/0.5A) power input(no battery charge function) ROF range: 100~5000RPM Extra large caliber (diameter 24mm) Weight: 200g without battery Size : L x W x H = 117 x 97 x 59 (mm) Q&A Q1:Why my AC5000 is inaccurate? A1: Factors do affect speed testing Battery: 1. low voltage, 2. Please use alkaline battery instead of carbon zinc battery CO2 smoke: In case of too much smoke causing the inaccuracy, please stay your muzzle 10cm away from the shooting hole of chrono when use CO2 airsoft gun shooting Over measures range: AC5000 measures muzzle velocity from 30 m/s ~ 400 m/s (90 ft/s ~ 1200 ft/s) Q2: Why my screen shows ADC Error 2? A2: Please insert USB power, then long press power botton for 5 seconds to turn on AC5000. Please follow the instruction shows on LCD. The condition of "ADC Error 2" would be solved. Q3: Why my AC5000 can't show ROF (Rate of fire)? A3: Shooting over 10 shots continuously is required, when you do the ROF test.