Règle correspondante
Switzerland
Practice Relating to Rule 80. Booby-Traps
Switzerland’s Military Manual (1984) states: “It is prohibited to use a booby-trap which functions unexpectedly when one moves or touches an apparently harmless object.” 
Switzerland, Lois et coutumes de la guerre, Manuel 51.7/III dfi, Armée suisse, 1984, p. 11.
Switzerland’s Basic Military Manual (1987) states:
It is forbidden to use booby-traps wherever they can be expected directly to endanger the physical integrity and the lives of civilians. They must not be set up in a perfidious manner, that is be attached or connected in some way to protective signs or signals, protected persons, animals, food or protected installations.
It refers to the 1980 Protocol II to the Convention on Certain Conventional Weapons. 
Switzerland, Lois et coutumes de la guerre (Extrait et commentaire), Règlement 51.7/II f, Armée Suisse, 1987, Article 23(b).
Switzerland’s Teaching Manual (1986) provides: “It is prohibited to use booby-traps which can be triggered unexpectedly.” It gives the example of a transistor radio. 
Switzerland, Droit des gens en temps de guerre, Programme d’instruction fondé sur le Manuel 51.7/III “Lois et coutumes de la guerre”, Cours de base pour recrues de toutes les armes 97.2f, Armée suisse, 1986, pp. 19–22.
Switzerland’s Aide-Memoire on the Ten Basic Rules of the Law of Armed Conflict (2005) states:
Rule 8
I remain fair:
- I shall deploy neither anti-personnel mines, poison nor booby traps[.] 
Switzerland, The Ten Basic Rules of the Law of Armed Conflict, Aide-memoire 51.007/IIIe, Swiss Army, issued based on Article 10 of the Ordinance for Organization of the Federal Department for Defence, Civil Protection and Sports dated 7 March 2003, entry into force on 1 July 2005, Rule 8.
Switzerland’s Regulation on Legal Bases for Conduct during an Engagement (2005) states:
16.1 Prohibited means of warfare
228 Prohibited are:
2 anti-personnel mines and booby-traps;*
(* = Convention not yet ratified by all States)
229 The production, stockpiling, import, export, transit and use of such means of combat are notably prohibited. 
Switzerland, Bases légales du comportement à l’engagement (BCE), Règlement 51.007/IVf, Swiss Army, issued based on Article 10 of the Ordinance on the Organization of the Federal Department for Defence, Civil Protection and Sports of 7 March 2003, entry into force on 1 July 2005, §§ 228(2) and 229.