Sun TrackerHarmonic Drive® technology A single-arm, 2-axis sun tracker with an easy, fully automated setup procedure and low power consumption, the STR-21G is built to deliver unparalleled precision, optimal positioning, and reliability, whatever the weather.SKU: STR-21G 0.000 (CNY) Qty: Add to cart Custom wishlist OKAdd to wishlistAdd to compare listEmail a friendSpecificationsCompareArms1Pointing accuracy Solar elevation: 0 to 87°< 0.01°Angle resolution0.009°Rotation angle Zenith-15 to 95°Rotation angle Azimuth0 to 360°Torque12 N⋅mPayload side arms7kgSun sensor FOV30°Ingress protectionIP65Operating temperature range-40 to 50°CCommunicationRS-422 / 232CPower Consumption< 20WMotorStepper motorDriving technologyHarmonic Drive®Tracking modesAutomatic & ManualTripodTable tripodPyrheliometer mountAdjustable / One sensor positionCable length10mWeight14.5kg (with tripod)