--- product_id: 81009998 title: "LEO Metal Automatic School Bell Timer & Siren NAT100HS (Combo) - Grey" brand: "leo" price: "Rp4866749" currency: IDR in_stock: true reviews_count: 1 category: "Leo" url: https://www.desertcart.id/products/81009998-leo-metal-automatic-school-bell-timer-and-siren-nat100hs-combo store_origin: ID region: Indonesia --- # 50 alarms/day precision Siren range up to 1 km 1-year holiday scheduling LEO Metal Automatic School Bell Timer & Siren NAT100HS (Combo) - Grey **Brand:** leo **Price:** Rp4866749 **Availability:** ✅ In Stock ## Summary > ⏳ Ring in flawless schedules, because every second counts! ## Quick Answers - **What is this?** LEO Metal Automatic School Bell Timer & Siren NAT100HS (Combo) - Grey by leo - **How much does it cost?** Rp4866749 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/81009998-leo-metal-automatic-school-bell-timer-and-siren-nat100hs-combo) ## Best For - leo enthusiasts ## Why This Product - Trusted leo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power Outage Proof:** Settings and real-time clock saved for 3 years even during power failures—never miss a bell. - • **Long-Range Siren Impact:** Crystal-clear siren sound reaches up to 1 kilometer, ensuring every corner hears the call. - • **User-Friendly Interface:** Elegant LCD display with alarm copy-paste functionality for quick, hassle-free programming. - • **Precision Timing Mastery:** Program up to 50 alarms daily with 5 distinct ring durations to perfectly segment your school day. - • **Versatile Mode Selection:** Switch effortlessly between Summer, Winter, and Exam modes to match your institution’s schedule. ## Overview The LEO Metal Automatic School Bell Timer & Siren NAT100HS is a robust, metal-encased timer system designed for schools and industries. It supports up to 50 alarms per day with customizable ring durations and modes, features a siren audible up to 1 km, and retains settings for 3 years during power outages. Its user-friendly LCD and programmable options make it a reliable automation tool for managing daily schedules efficiently. ## Description sales package includes 2 qty (Timer and siren) Based on the latest microcontroller technology. Automatic Bell Timer System is an elegant device, especially designed to ring the Schools/Colleges/Industry Bell automatically. There is no need to assign an individual for ringing the bell, at different times during the day. A user can program various timings of the periods, Short breakes, etc. With the provision of 30 bells/day, a user can set the length of each bell separately (5 types) , to identify different bells at different times, for example, separate bell for assembly, separate bell for recess, separate for periods, etc. It has a crystal-clear LCD display, which helps the user to read & set various parameters easily. In case of power failure, all settings and Real Time Clock, are saved for 3 years. Note - Ringer/Hooter/Siren is not included with the device. A separate 230V AC Siren needs to be connected to the device. Review: worst product. - Not working.... ## Features - sales package includes 2 qty (Timer and siren) - 50 alarm per day,350 alarm per week, - 5 Type ring duration,1 year holiday setting option - It has Alarm Copy & Paste Option - Siren Sound range upto 0.5 kilometer to 1 kilometer - Summer,Winter,Exam Mode Option ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07CQFFQG7 | | Best Sellers Rank | #186,847 in Home Improvement ( See Top 100 in Home Improvement ) #16,810 in Home Improvement Electrical | | Brand | LEO | | Colour | grey | | Country of Origin | British Indian Ocean Territory | | Customer Reviews | 1.0 out of 5 stars 1 Review | | Enclosure Material | Metal | | Included Components | one Siren | | Item Dimensions D x W x H | 15D x 30W x 19H Centimeters | | Item Height | 19 Centimeters | | Item Type Name | timer | | Item Weight | 2 Kilograms | | Manufacturer | LEO, LEO Electronics. 123/A, Bagewadi Compound, PB Road, Near Mahadik petrol pump, shiroli(P), Maharashtra, 416122. www.leoproducts.in | | Manufacturer Contact Information | LEO Electronics. 123/A, Bagewadi Compound, PB Road, Near Mahadik petrol pump, shiroli(P), Maharashtra, 416122. www.leoproducts.in | | Material | Metal | | Number of settings | 5 | | Product Dimensions | 15D x 30W x 19H Centimeters | ## Product Details - **Colour:** grey - **Brand:** LEO - **Material:** Metal - **Product Dimensions:** 15D x 30W x 19H Centimeters - **Item Weight:** 2 Kilograms ## Images ![LEO Metal Automatic School Bell Timer & Siren NAT100HS (Combo) - Grey - Image 1](https://m.media-amazon.com/images/I/21WDcsD-ShL.jpg) ![LEO Metal Automatic School Bell Timer & Siren NAT100HS (Combo) - Grey - Image 2](https://m.media-amazon.com/images/I/41OPxFL15hL.jpg) ![LEO Metal Automatic School Bell Timer & Siren NAT100HS (Combo) - Grey - Image 3](https://m.media-amazon.com/images/I/71p39lBznYL.jpg) ![LEO Metal Automatic School Bell Timer & Siren NAT100HS (Combo) - Grey - Image 4](https://m.media-amazon.com/images/I/912V7mua+yL.jpg) ## Customer Reviews ### ⭐ worst product. *by N***A on 23 September 2019* Not working.... ## Frequently Bought Together - LEO Metal Automatic School Bell Timer & Siren NAT100HS (Combo) - Grey - LEYDEN® KG316TJ, 30A, 220/230VAC, 50Hz Digital Timer Switch for Electrical ON Off, 16 On Off Program Per Day, Manual Start ON-Off Delay & Cyclic Timer Switch - Blackt Electrotech (BT-41D): 16/240V AC Programmable Daily/Weekly Digital LCD Display Control Counter/Time Timer Relay Switch: DIN Rail Type (Warranty 6 Months) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.id/products/81009998-leo-metal-automatic-school-bell-timer-and-siren-nat100hs-combo](https://www.desertcart.id/products/81009998-leo-metal-automatic-school-bell-timer-and-siren-nat100hs-combo) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-05-13*