This document discusses force balance accelerometers from Asian contec Limited. The AFB force balance accelerometers are high sensitivity, low noise sensors available in ranges from ±0.25G to ±4G for seismic and low-level, low-frequency motion studies. They utilize low noise electronics for micro-G range applications and provide AC coupled zero output to eliminate tilt-induced errors, facilitating high signal amplification. The accelerometers are well-suited for seismic applications like earthquake monitoring and structural vibration monitoring in buildings, dams, and other large structures.