... second, 0.1 minute etc., which can be set via software menu. 3. High accuracy. 4. Different timing mode optional (count ... , 0.1s, 1s, 0.1m, 1m, 0.1h, 1h (optional software setting)Timing range0.1~99Power supply220VAC(default), 110VAC or 12VAC ... ~50°C Humidity ≤85% no caustic or magnetic field interference intelligent time relay