Lesson learned from the Anak Krakatau volcanic eruption followed by the tsunami on 22 December 2018 has generated a huge gap in the readiness of the Indonesian early warning system to detect such an event. Consequently. the official was found it difficult to broadcast the right warning within a considerable time to the local residences to evacuate or take necessary actions. which resu... https://jalyttlers.shop/product-category/rechargeable-lamp/