When Jay & Jesse are first talking in the kitchen they have candles for light, suggesting no electricity, however, you can clearly see the green clock on the oven is functioning.
At the house where Jay and Jesse look for CENA devices, the lawn appears to be recently mowed.
At approximately 27 minutes, the wind attacks the priest and solidifies him and his clothes and everything then crumbles to dust. But the electronic device he is holding is not affected.
Near the end, Sira starts getting a nosebleed in his left nostril, but he wipes his right nostril.
As the boy leaves his 'dead' mother, you can see her chest move up and down slightly as she breathes.