... intelligent valve actuator & easy to contral 1.GENERAL DESCRIPTION Electric Linear Travel Modulating Actuator ... over torque, and travel limit, etc.2.SERVICE ENVIRONMENT2.1 Power supply: Single phase, 220 V, AC, 50 ... AC,50 Hz. Other specific specifications are based on contract)1.2 Environment temperature: - 40°C ~ +60°C1. ... : ≤ 95% (+25°C)1.4 Signals: input, 4~20 mA DC; output, 4~20 mA DC1.5 Dead band: 0 ...